PASS THROUGH TRUST AGREEMENT dated as of June 26, 2007 between UNITED AIR LINES, INC. and WILMINGTON TRUST COMPANY, as Trustee

Exhibit 4.4

PASS THROUGH TRUST AGREEMENT

dated as of June 26, 2007

between

UNITED AIR LINES, INC.

and

WILMINGTON TRUST COMPANY,

as Trustee

Vedder, Price, ▇▇▇▇▇▇▇ & Kammholz, P.C.

Chicago, Illinois

TABLE OF CONTENTS


		Page
ARTICLE I	DEFINITIONS	2

Section 1.01.	Definitions	2
Section 1.02.	Compliance Certificates and Opinions	9
Section 1.03.	Form of Documents Delivered to Trustee	10
Section 1.04.	Directions of Certificateholders	10

ARTICLE II	ORIGINAL ISSUANCE OF CERTIFICATES: ACQUISITION OF TRUST PROPERTY	12

Section 2.01.	Amount Unlimited; Issuable in Series	12
Section 2.02.	Acquisition of Equipment Notes	14
Section 2.03.	Acceptance by Trustee	14
Section 2.04.	Limitation of Powers	14

ARTICLE III	THE CERTIFICATES	14

Section 3.01.	Form, Denomination and Execution of Certificates	14
Section 3.02.	Authentication of Certificates	15
Section 3.03.	Temporary Certificates	15
Section 3.04.	Transfer and Exchange	16
Section 3.05.	Book-Entry and Definitive Certificates	16
Section 3.06.	Mutilated, Destroyed, Lost or Stolen Certificates	18
Section 3.07.	Persons Deemed Owners	19
Section 3.08.	Cancellation	19
Section 3.09.	Limitation of Liability for Payments	19

ARTICLE IV	DISTRIBUTIONS; STATEMENTS TO CERTIFICATEHOLDERS	20

Section 4.01.	Certificate Account and Special Payments Account	20
Section 4.02.	Distributions from Certificate Account and Special Payments Account	20
Section 4.03.	Statements to Certificateholders	22
Section 4.04.	Investment of Special Payment Moneys	23

ARTICLE V	THE COMPANY	23

Section 5.01.	Maintenance of Corporate Existence	23
Section 5.02.	Consolidation, Merger, Etc	23

ARTICLE VI	DEFAULT	24

Section 6.01.	Events of Default	24
Section 6.02.	Incidents of Sale of Equipment Notes	25
Section 6.03.	Judicial Proceedings Instituted by Trustee; Trustee May Bring Suit	26
Section 6.04.	Control by Certificateholders	26
Section 6.05.	Waiver of Past Defaults	27

TABLE OF CONTENTS

(continued)


		Page
Section 6.06.	Right of Certificateholders to Receive Payments Not to Be Impaired	27
Section 6.07.	Certificateholders May Not Bring Suit Except Under Certain Conditions	27
Section 6.08.	Remedies Cumulative	28
Section 6.09.	Undertaking for Costs	28

ARTICLE VII	THE TRUSTEE	28

Section 7.01.	Certain Duties and Responsibilities	28
Section 7.02.	Notice of Defaults	29
Section 7.03.	Certain Rights of Trustee	29
Section 7.04.	Not Responsible for Recitals or Issuance of Certificates	30
Section 7.05.	May Hold Certificates	31
Section 7.06.	Money Held in Trust	31
Section 7.07.	Compensation and Reimbursement	31
Section 7.08.	Corporate Trustee Required; Eligibility	32
Section 7.09.	Resignation and Removal; Appointment of Successor	32
Section 7.10.	Acceptance of Appointment by Successor	33
Section 7.11.	Merger, Conversion, Consolidation or Succession to Business	34
Section 7.12.	Maintenance of Agencies	34
Section 7.13.	Money for Certificate Payments to be Held in Trust	36
Section 7.14.	Registration of Equipment Notes in Trustee’s Name	36
Section 7.15.	Representations and Warranties of Trustee	36
Section 7.16.	Withholding Taxes; Information Reporting	37
Section 7.17.	Trustee’s Liens	37
Section 7.18.	Preferential Collection of Claims	38

ARTICLE VIII	CERTIFICATEHOLDERS’ LISTS AND REPORTS BY TRUSTEE	38

Section 8.01.	The Company to Furnish Trustee with Names and Addresses of Certificateholders	38
Section 8.02.	Preservation of Information; Communications to Certificateholders	38
Section 8.03.	Reports by Trustee	38
Section 8.04.	Reports by the Company	38

ARTICLE IX	SUPPLEMENTAL AGREEMENTS	39

Section 9.01.	Supplemental Agreements Without Consent of Certificateholders	39
Section 9.02.	Supplemental Agreements with Consent of Certificateholders	41
Section 9.03.	Documents Affecting Immunity or Indemnity	42
Section 9.04.	Execution of Supplemental Agreements	42
Section 9.05.	Effect of Supplemental Agreements	42
Section 9.06.	Conformity with Trust Indenture Act	42

TABLE OF CONTENTS

(continued)


		Page
Section 9.07.	Reference in Certificates to Supplemental Agreements	42

ARTICLE X	AMENDMENTS TO INDENTURE AND NOTE DOCUMENTS	43

Section 10.01.	Amendments and Supplements to Indenture and other Note Documents	43

ARTICLE XI	TERMINATION OF TRUSTS	44

Section 11.01.	Termination of the Trusts	44

ARTICLE XII	MISCELLANEOUS PROVISIONS	45

Section 12.01.	Limitation on Rights of Certificateholders	45
Section 12.02.	Liabilities of Certificateholders	45
Section 12.03.	Registration of Equipment Notes in Name of Subordination Agent	45
Section 12.04.	Notices	45
Section 12.05.	Governing Law	46
Section 12.06.	Severability of Provisions	47
Section 12.07.	Trust Indenture Act Controls	47
Section 12.08.	Effect of Headings and Table of Contents	47
Section 12.09.	Successors and Assigns	47
Section 12.10.	Benefits of Agreement	47
Section 12.11.	Legal Holidays	47
Section 12.12.	Counterparts	47
Section 12.13.	Communication by Certificateholders with other Certificateholders	47
Section 12.14.	Intention of Parties	48

iii

Reconciliation and tie between United Air Lines Pass Through Trust Agreement, dated as of June 26, 2007 and the Trust Indenture Act of 1939. This reconciliation does not constitute part of the Pass Through Trust Agreement.


Trust Indenture Act of ▇▇▇▇ ▇▇▇▇▇▇▇		▇▇▇▇ Through Trust Agreement Section
310(a)(1)		7.08
(a)(2)		7.08
312(a)		3.05; 8.01; 8.02
313(a)		8.03
314(a)		8.04(a) - (c)
(a)(4)		8.04(d)
(c)(1)		1.02
(c)(2)		1.02
(e)		1.02
315(b)		7.02
316(a)(last sentence)		1.01
(a)(1)(A)		6.04
(a)(1)(B)		6.05
(b)		6.06
(c)		1.04(d)
317(a)(1)		6.03
(b)		7.13
318(a)		12.05

PASS THROUGH TRUST AGREEMENT

This PASS THROUGH TRUST AGREEMENT, dated as of June 26, 2007 (the “Basic Agreement”), between UNITED AIR LINES, INC., a Delaware corporation (the “Company”), and WILMINGTON TRUST COMPANY, a Delaware trust company, as Trustee, is made with respect to the formation from time to time of separate United Air Lines Pass Through Trusts, and the issuance from time to time of separate series of Pass Through Certificates representing fractional undivided interests in the respective Trusts.

W I T N E S S E T H:

WHEREAS, from time to time, the Company and the Trustee may enter into a Trust Supplement (this and certain other defined terms used herein are defined in Section 1.01) pursuant to which the Trustee shall declare the creation of a separate Trust for the benefit of the Holders of the series of Certificates to be issued in respect of such Trust, and the initial Holders of the Certificates of such series, as the grantors of such Trust, by their respective acceptances of the Certificates of such series, shall join in the creation of such Trust with the Trustee;

WHEREAS, all Certificates to be issued in respect of each separate Trust will be issued as a separate series pursuant to this Agreement, will evidence fractional undivided interests in such Trust and will have no rights, benefits or interests in respect of any other separate Trust or the property held therein, subject, however, to the provisions of any Intercreditor Agreement to which one or more Trusts may be a party;

WHEREAS, from time to time, pursuant to the terms and conditions of this Agreement with respect to each separate Trust formed hereunder, the Trustee on behalf of such Trust shall purchase one or more issues of Equipment Notes having the same interest rate as, and final maturity dates not later than the final Regular Distribution Date of, the series of Certificates issued in respect of such Trust and, subject to the terms of any related Intercreditor Agreement, shall hold such Equipment Notes in trust for the benefit of the Certificateholders of such Trust;

WHEREAS, to facilitate the sale of Equipment Notes to, and the purchase of Equipment Notes by, the Trustee on behalf of each Trust created from time to time pursuant to this Agreement, the Company as the “issuer”, as such term is defined in and solely for purposes of the Securities Act of 1933, as amended, of the Certificates to be issued in respect of each Trust and as the “obligor”, as such term is defined in and solely for purposes of the Trust Indenture Act of 1939, as amended, has duly authorized the execution and delivery of this Basic Agreement and each Trust Supplement with respect to all such Certificates and is undertaking to perform certain administrative and ministerial duties hereunder and is also undertaking to pay the fees and expenses of the Trustee; and

WHEREAS, this Basic Agreement, as supplemented from time to time, is subject to the provisions of the Trust Indenture Act of 1939, as amended, and shall, to the extent applicable, be governed by such provisions;

NOW, THEREFORE, in consideration of the mutual agreements herein contained, and of other good and valuable consideration the receipt and adequacy of which are hereby acknowledged, the parties hereto agree as follows:

[Pass Through Trust Agreement]

ARTICLE I

DEFINITIONS

Section 1.01. Definitions. For all purposes of this Basic Agreement, except as otherwise expressly provided or unless the context otherwise requires:

(1) the terms used herein that are defined in this Article I have the meanings assigned to them in this Article I, and include the plural as well as the singular;

(2) all other terms used herein which are defined in the Trust Indenture Act, either directly or by reference therein, or by the rules promulgated under the Trust Indenture Act, have the meanings assigned to them therein;

(3) all references in this Basic Agreement to designated “Articles”, “Sections”, “Subsections” and other subdivisions are to the designated Articles, Sections, Subsections and other subdivisions of this Basic Agreement;

(4) the words “herein”, “hereof” and “hereunder” and other words of similar import refer to this Basic Agreement as a whole and not to any particular Article, Section, Subsection or other subdivision;

(5) unless the context otherwise requires, whenever the words “including”, “include” or “includes” are used herein, it shall be deemed to be followed by the phrase “without limitation”; and

(6) the term “this Agreement” (as distinguished from “this Basic Agreement”) refers, unless the context otherwise requires, to this Basic Agreement as supplemented by the Trust Supplement creating a particular Trust and establishing the series of Certificates issued or to be issued in respect thereof, with reference to such Trust and such series of Certificates, as this Basic Agreement as so supplemented may be further supplemented with respect to such Trust and such series of Certificates.

Act: Has the meaning, with respect to any Certificateholder, specified in Section 1.04(a).

Affiliate: Means, with respect to any specified Person, any other Person directly or indirectly controlling or controlled by or under direct or indirect common control with such Person. For the purposes of this definition, “control”, when used with respect to any specified Person, means the power, directly or indirectly, to direct the management and policies of such Person, whether through the ownership of voting securities or by contract or otherwise, and the terms “controlling” and “controlled” have meanings correlative to the foregoing.

Aircraft: Means one or more aircraft, including engines therefor, owned by the Company and securing one or more Equipment Notes.

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Authorized Agent: Means, with respect to the Certificates of any series, any Paying Agent or Registrar for the Certificates of such series.

Avoidable Tax: Means a state or local tax: (i) upon (w) a Trust, (x) Trust Property, (y) Certificateholders or (z) a Trustee for which such Trustee is entitled to seek reimbursement from Trust Property, and (ii) which would be avoided if the Trustee were located in another state, or jurisdiction within a state, within the United States of America. A tax shall not be an Avoidable Tax in respect of any Trust if the Company shall agree to pay, and shall pay, such tax.

Basic Agreement: Means this Pass Through Trust Agreement, as the same may from time to time be supplemented, amended or modified, but does not include any Trust Supplement.

Book-Entry Certificates: Means, with respect to the Certificates of any series, a beneficial interest in the Certificates of such series, ownership and transfers of which shall be made through book entries as described in Section 3.05.

Break Amount: Has the meaning set forth in any Intercreditor Agreement.

Business Day: Means, with respect to the Certificates of any series, any day other than a Saturday, a Sunday or a day on which commercial banks are required or authorized to close in Chicago, Illinois, New York, New York, or, so long as any Certificate of such series is outstanding, the city and state in which the Trustee or any related Loan Trustee maintains its Corporate Trust Office or receives and disburses funds.

Certificate: Means any one of the certificates executed and authenticated by the Trustee, substantially in the form attached to the Trust Supplement establishing such series of Certificates.

Certificate Account: Means, with respect to the Certificates of any series, the account or accounts created and maintained for such series pursuant to Section 4.01(a) and the related Trust Supplement.

Certificateholder or Holder: Means, with respect to the Certificates of any series, the Person in whose name a Certificate of such series is registered in the Register for Certificates of such series.

Certificate Owner: Means, with respect to the Certificates of any series, for purposes of Section 3.05, the Person who owns a Book-Entry Certificate of such series.

Clearing Agency: Means an organization registered as a “clearing agency” pursuant to Section 17A of the Securities Exchange Act of 1934, as amended.

Clearing Agency Participant: Means a broker, dealer, bank, other financial institution or other Person for whom from time to time a Clearing Agency effects, directly or indirectly, book-entry transfers and pledges of securities deposited with the Clearing Agency.

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Closing Date: Has the meaning assigned to that term in a Note Purchase Agreement, and in any event refers to any such date as it may be changed from time to time in accordance with the terms of such Note Purchase Agreement.

Company: Means United Air Lines, Inc., a Delaware corporation, or its successor in interest pursuant to Section 5.02, or (only in the context of provisions hereof, if any, when such reference is required for purposes of compliance with the Trust Indenture Act) any other “obligor” (within the meaning of the Trust Indenture Act) with respect to the Certificates of any series.

Controlling Party: Means the Person entitled to act as such pursuant to the terms of any Intercreditor Agreement.

Corporate Trust Office: Means, with respect to the Trustee or any Loan Trustee, the office of such trustee in the city at which at any particular time its corporate trust business shall be principally administered.

Cut-off Date: Means, with respect to the Certificates of any series, the date designated as such in the Trust Supplement establishing such series.

Definitive Certificates: Has the meaning, with respect to the Certificates of any series, specified in Section 3.05.

Direction: Has the meaning specified in Section 1.04(a).

Distribution Date: Means any Regular Distribution Date or Special Distribution Date as the context requires.

Equipment Notes: Means, with respect to the Certificates of any series, all of the equipment notes issued under the Indentures related to such series of Certificates.

ERISA: Means the Employee Retirement Income Security Act of 1974, as amended from time to time, or any successor federal statute.

Event of Default: Means, in respect of any Trust, an Indenture Event of Default under any Indenture pursuant to which Equipment Notes held by such Trust were issued.

Fractional Undivided Interest: Means the fractional undivided interest in a Trust that is evidenced by a Certificate relating to such Trust.

Indenture: Means, with respect to any Trust, each of the one or more separate trust indenture and security agreements or trust indenture and mortgages or similar documents described in, or on a schedule attached to, the Note Purchase Agreement, as each such indenture may be amended or supplemented in accordance with its respective terms; and “Indentures” means all of such agreements.

[Pass Through Trust Agreement]

Indenture Event of Default: Means, with respect to any Indenture, any Indenture Event of Default (as such term is defined in such Indenture).

Initial Regular Distribution Date: Means, with respect to the Certificates of any series, the first Regular Distribution Date on which a Scheduled Payment is to be made.

Intercreditor Agreement: Means any agreement by and among the Trustee, as trustee hereunder with respect to one or more Trusts, one or more Liquidity Providers and a Subordination Agent providing, among other things, for the distribution of payments made in respect of Equipment Notes held by such Trusts.

Issuance Date: Means, with respect to the Certificates of any series, the date of the issuance of such Certificates.

Letter of Representations: Means, with respect to the Certificates of any series, an agreement among the Company, the Trustee and the initial Clearing Agency.

Liquidity Facility: Means, with respect to the Certificates of any series, any revolving credit agreement, letter of credit or similar facility relating to the Certificates of such series between a bank or other financial institution and a Subordination Agent, as amended, replaced, supplemented or otherwise modified from time to time in accordance with its terms and the terms of any Intercreditor Agreement.

Liquidity Provider: Means, with respect to the Certificates of any series, a bank or other financial institution that agrees to provide a Liquidity Facility for the benefit of the holders of Certificates of such series.

Loan Trustee: Means, with respect to any Equipment Note or the Indenture applicable thereto, the bank or trust company designated as loan or indenture trustee under such Indenture, and any successor to such Loan Trustee as such trustee; and “Loan Trustees” means all of the Loan Trustees under the Indentures.

Note Documents: Means, with respect to the Certificates of any series, the Equipment Notes with respect to such Certificates and, with respect to such Equipment Notes, the related Indenture, the related Participation Agreement, the related Note Purchase Agreement and if the Equipment Notes are guaranteed by the Parent, the related Parent Guarantee.

Note Purchase Agreement: Means, with respect to the Certificates of any series, any note purchase, refunding, participation or similar agreement providing for, among other things, the purchase of Equipment Notes by the Trustee on behalf of the relevant Trust; and Note Purchase Agreements means all such agreements.

Officer’s Certificate: Means a certificate signed, (a) in the case of the Company, by the Chairman or Vice Chairman of the Board of Directors, the President, any Vice President or the Treasurer of the Company, signing alone, or (b) in the case of the Trustee or an Owner Trustee or a Loan Trustee, a Responsible Officer of the Trustee or such Owner Trustee or such Loan Trustee, as the case may be.

[Pass Through Trust Agreement]

Opinion of Counsel: Means a written opinion of legal counsel who (a) in the case of counsel for the Company may be (i) a senior attorney of the Company one of whose principal duties is furnishing advice as to legal matters, (ii) Vedder, Price, ▇▇▇▇▇▇▇ & Kammholz, P.C., (iii) Cravath, Swaine & ▇▇▇▇▇ or (iv) such other counsel designated by the Company and reasonably acceptable to the Trustee and (b) in the case of any Loan Trustee, may be such counsel as may be designated by any of them whether or not such counsel is an employee of any of them, and who shall be reasonably acceptable to the Trustee.

Other Agreements: Has the meaning specified in Section 6.01(b).

Outstanding: When used with respect to Certificates of any series, means, as of the date of determination, all Certificates of such series theretofore authenticated and delivered under this Agreement, except:

(i) Certificates of such series theretofore cancelled by the Registrar or delivered to the Trustee or the Registrar for cancellation;

(ii) All of the Certificates of such series if money in the full amount required to make the final distribution with respect to such series pursuant to Section 11.01 hereof has been theretofore deposited with the Trustee in trust for the Holders of the Certificates of such series as provided in Section 4.01 pending distribution of such money to such Certificateholders pursuant to payment of such final distribution payment; and

(iii) Certificates of such series in exchange for or in lieu of which other Certificates of such series have been authenticated and delivered pursuant to this Agreement.

Parent Guarantor: Means, UAL Corporation, a Delaware corporation, or its successor and assigns.

Parent Guarantee: Means, with respect to any Equipment Note, the guarantee thereof pursuant to the terms of the related Indenture or pursuant to the terms of a separate guarantee agreement, as such guarantee or guarantee agreement may be amended, supplemented or otherwise modified in accordance with its terms.

Participation Agreement: With respect to an Aircraft, means the Participation Agreement referred to in the related Indenture.

Paying Agent: Means, with respect to the Certificates of any series, the paying agent maintained and appointed for the Certificates of such series pursuant to Section 7.12.

[Pass Through Trust Agreement]

Permitted Investments: Means obligations of the United States of America or agencies or instrumentalities thereof for the payment of which the full faith and credit of the United States of America is pledged, maturing in not more than 60 days after the date of acquisition thereof or such lesser time as is required for the distribution of any Special Payments on a Special Distribution Date.

Person: Means any person, including any individual, corporation, limited liability company, partnership, joint venture, association, joint-stock company, trust, trustee, unincorporated organization, or government or any agency or political subdivision thereof.

Pool Balance: Means, with respect to each Trust or the Certificates of any series as of any date, (i) the original aggregate face amount of the Certificates of such series less (ii) the aggregate amount of all payments made in respect of such Certificates other than payments made in respect of interest, Break Amount or premium thereon or reimbursement of any costs or expenses incurred in connection therewith. The Pool Balance as of any Distribution Date shall be computed after giving effect to the payment of principal, if any, on the Equipment Notes or other Trust Property held in the Trust and the distribution thereof to be made on such Distribution Date.

Pool Factor: Means, with respect to any series of Certificates as of any date, the quotient (rounded to the seventh decimal place) computed by dividing (i) the Pool Balance of such series as at such date by (ii) the original aggregate face amount of the Certificates of such series. The Pool Factor as of any Distribution Date shall be computed after giving effect to the payment of principal, if any, on the Equipment Notes or other Trust Property held in the Trust and the distribution thereof to be made on such Distribution Date.

Potential Purchaser: Has the meaning, with respect to any Certificateholder, specified in Section 6.01(b).

Purchasing Certificateholder: Has the meaning, with respect to any Certificateholder, specified in Section 6.01(b).

Record Date: Means, with respect to any Trust or the related series of Certificates, (i) for Scheduled Payments to be distributed on any Regular Distribution Date, other than the final distribution with respect to such series, the 15th day (whether or not a Business Day) preceding such Regular Distribution Date, and (ii) for Special Payments to be distributed on any Special Distribution Date, other than the final distribution with respect to such series, the 15th day (whether or not a Business Day) preceding such Special Distribution Date.

Register and Registrar: Means, each with respect to the Certificates of any series, the register maintained and the registrar appointed pursuant to Sections 3.04 and 7.12.

Regular Distribution Date: Means, with respect to distributions of Scheduled Payments in respect of any series of Certificates, each date designated as such in such Certificates, until payment of all the Scheduled Payments to be made under the Equipment Notes held in the related Trust have been made; provided, that if any such day is not a Business Day, the related distribution shall be made on the next succeeding Business Day.

[Pass Through Trust Agreement]

Request: Means a request by the Company setting forth the subject matter of the request accompanied by an Officer’s Certificate and an Opinion of Counsel as provided in Section 1.02 of this Basic Agreement.

Responsible Officer: Means, with respect to any Trustee, any Loan Trustee and any Owner Trustee, any officer in the corporate trust department of the Trustee, Loan Trustee or Owner Trustee or any other officer customarily performing functions similar to those performed by the persons who at the time shall be such officers, respectively, or to whom any corporate trust matter is referred because of his knowledge of and familiarity with a particular subject.

Responsible Party: Means, with respect to the Certificates of any series, the Company.

Scheduled Payment: Means, with respect to any Equipment Note, (i) any payment of principal or interest on such Equipment Note (other than any such payment which is not in fact received by the Trustee or any Subordination Agent within ten (10) Business Days of the date on which such payment is scheduled to be made) or (ii) any payment of interest on the Certificates of any series with funds drawn under the Liquidity Facility for such series, which payment represents the installment of principal on such Equipment Note at the stated maturity of such installment, the payment of regularly scheduled interest accrued on the unpaid principal amount of such Equipment Note, or both; provided, however, that any payment of principal, Break Amount, premium, if any, or interest resulting from the redemption or purchase of any Equipment Note shall not constitute a Scheduled Payment.

SEC: Means the Securities and Exchange Commission, as from time to time constituted or created under the Securities Exchange Act of 1934, as amended, or, if at any time after the execution of this instrument such Commission is not existing and performing the duties now assigned to it under the Trust Indenture Act, then the body performing such duties on such date.

Selling Certificateholder: Has the meaning, with respect to any Certificateholder, specified in Section 6.01(b).

Special Distribution Date: Means, with respect to the Certificates of any series, each date on which a Special Payment is to be distributed as specified in this Agreement; provided, that if any such day is not a Business Day, the related distribution shall be made on the next succeeding Business Day.

Special Payment: Means any payment (other than a Scheduled Payment) in respect of, or any proceeds of, any Equipment Note or Trust Indenture Estate (as defined in each Indenture).

Special Payments Account: Means, with respect to the Certificates of any series, the account or accounts created and maintained for such series pursuant to Section 4.01(b) and the related Trust Supplement.

[Pass Through Trust Agreement]

Subordination Agent: Has the meaning specified therefor in any Intercreditor Agreement.

Triggering Event: Has the meaning specified therefor in any Intercreditor Agreement.

Trust: Means, with respect to the Certificates of any series, the trust under this Agreement.

Trustee: Means Wilmington Trust Company, or its successor in interest, and any successor or other trustee appointed as provided herein.

Trust Indenture Act: Except as otherwise provided in Section 9.06, means, with respect to any particular Trust, the United States Trust Indenture Act of 1939, as in force at the date as of which the related Trust Supplement was executed.

Trust Property: Means, with respect to any Trust, (i) subject to any related Intercreditor Agreement, the Equipment Notes held as the property of such Trust, the related Parent Guarantee, if any, all monies at any time paid thereon and all monies due and to become due thereunder, (ii) funds from time to time deposited in the related Certificate Account and the related Special Payments Account and, subject to the related Intercreditor Agreement, any proceeds from the sale by the Trustee pursuant to Article VI hereof of any such Equipment Note, (iii) all rights of such Trust and the Trustee, on behalf of the Trust, under any Intercreditor Agreement or Note Purchase Agreement, including, without limitation, all monies receivable in respect of such rights, and (iv) all monies receivable under any Liquidity Facility for such Trust.

Trust Supplement: Means an agreement supplemental hereto pursuant to which (i) a separate Trust is created for the benefit of the Holders of the Certificates of a series, (ii) the issuance of the Certificates of such series representing fractional undivided interests in such Trust is authorized and (iii) the terms of the Certificates of such series are established.

Section 1.02. Compliance Certificates and Opinions. Upon any application or request by the Company or any Loan Trustee to the Trustee to take any action under any provision of this Basic Agreement or, in respect of the Certificates of any series, this Agreement, the Company or such Loan Trustee, as the case may be, shall furnish to the Trustee (i) an Officer’s Certificate stating that, in the opinion of the signers, all conditions precedent, if any, provided for in this Basic Agreement or this Agreement relating to the proposed action have been complied with and (ii) an Opinion of Counsel stating that in the opinion of such counsel all such conditions precedent, if any, have been complied with, except that in the case of any such application or request as to which the furnishing of such documents is specifically required by any provision of this Basic Agreement or this Agreement relating to such particular application or request, no additional certificate or opinion need be furnished.

Every certificate or opinion with respect to compliance with a condition or covenant provided for in this Basic Agreement or, in respect of the Certificates of any series, this Agreement (other than a certificate provided pursuant to Section 8.04(d)) or any Trust Supplement shall include:

(1) a statement that each individual signing such certificate or opinion has read such covenant or condition and the definitions in this Basic Agreement or this Agreement relating thereto;

[Pass Through Trust Agreement]

(2) a brief statement as to the nature and scope of the examination or investigation upon which the statements or opinions contained in such certificate or opinion are based;

(3) a statement that, in the opinion of each such individual, he has made such examination or investigation as is necessary to enable him to express an informed opinion as to whether or not such covenant or condition has been complied with; and

(4) a statement as to whether, in the opinion of each such individual, such condition or covenant has been complied with.

Section 1.03. Form of Documents Delivered to Trustee. In any case where several matters are required to be certified by, or covered by an opinion of, any specified Person, it is not necessary that all such matters be certified by, or covered by the opinion of, only one such Person, or that they be so certified or covered by only one document, but one such Person may certify or give an opinion with respect to some matters and one or more other such Persons as to other matters and any such Person may certify or give an opinion as to such matters in one or several documents.

Where any Person is required to make, give or execute two or more applications, requests, consents, certificates, statements, opinions or other instruments under this Basic Agreement or, in respect of the Certificates of any series, this Agreement, they may, but need not, be consolidated and form one instrument.

Section 1.04. Directions of Certificateholders. (a) Any direction, consent, request, demand, authorization, notice, waiver or other action provided by this Agreement in respect of the Certificates of any series to be given or taken by Certificateholders (a “Direction”) may be embodied in and evidenced by one or more instruments of substantially similar tenor signed by such Certificateholders in person or by an agent or proxy duly appointed in writing; and, except as herein otherwise expressly provided, such action shall become effective when such instrument or instruments are delivered to the Trustee and, when it is hereby expressly required pursuant to this Agreement, to the Company or any Loan Trustee. Such instrument or instruments (and the action embodied therein and evidenced thereby) are herein sometimes referred to as the “Act” of the Certificateholders signing such instrument or instruments. Proof of execution of any such instrument or of a writing appointing any such agent or proxy shall be sufficient for any purpose of this Trust Agreement and conclusive in favor of the Trustee, the Company and the related Loan Trustee, if made in the manner provided in this Section 1.04.

(b) The fact and date of the execution by any Person of any such instrument or writing may be proved by the certificate of any notary public or other officer of any jurisdiction authorized to take acknowledgments of deeds or administer oaths that the Person executing such

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instrument acknowledged to him the execution thereof, or by an affidavit of a witness to such execution sworn to before any such notary or such other officer, and where such execution is by an officer of a corporation or association or a member of a partnership, on behalf of such corporation, association or partnership, such certificate or affidavit shall also constitute sufficient proof of his authority. The fact and date of the execution of any such instrument or writing, or the authority of the Person executing the same, may also be proved in any other reasonable manner which the Trustee deems sufficient.

(c) In determining whether the Certificateholders of the requisite Fractional Undivided Interests of Certificates of any series Outstanding have given any Direction under this Agreement, Certificates owned by the Company or any Affiliate thereof shall be disregarded and deemed not to be Outstanding for purposes of any such determination. In determining whether the Trustee shall be protected in relying upon any such Direction, only Certificates which the Trustee knows to be so owned shall be so disregarded. Notwithstanding the foregoing, (i) if any such Person (i.e., the Company or any Affiliate thereof) owns 100% of the Certificates of any series Outstanding, such Certificates shall not be so disregarded, and (ii) if any amount of Certificates of any series so owned by any such Person have been pledged in good faith, such Certificates shall not be disregarded if the pledgee establishes to the satisfaction of the Trustee the pledgee’s right so to act with respect to such Certificates and that the pledgee is not the Company or any Affiliate thereof.

(d) The Company may, at its option, by delivery of an Officer’s Certificate to the Trustee, set a record date to determine the Certificateholders in respect of the Certificates of any series, entitled to give any Direction. Notwithstanding Section 316(c) of the Trust Indenture Act, such record date shall be the record date specified in such Officer’s Certificate, which shall be a date not more than 30 days prior to the first solicitation of Certificateholders of the applicable series in connection therewith. If such a record date is fixed, such Direction may be given before or after such record date, but only the Certificateholders of record of the applicable series at the close of business on such record date shall be deemed to be Certificateholders for the purposes of determining whether Certificateholders of the requisite proportion of Outstanding Certificates of such series have authorized or agreed or consented to such Direction, and for that purpose the Outstanding Certificates shall be computed as of such record date; provided, however, that no such Direction by the Certificateholders on such record date shall be deemed effective unless it shall become effective pursuant to the provisions of this Agreement not later than one year after such record date.

(e) Any Direction by the Holder of any Certificate shall bind the Holder of every Certificate issued upon the transfer thereof or in exchange therefor or in lieu thereof, whether or not notation of such Direction is made upon such Certificate.

(f) Except as otherwise provided in Section 1.04(c), Certificates of any series owned by or pledged to any Person shall have an equal and proportionate benefit under the provisions of this Agreement, without preference, priority or distinction as among all of the Certificates of such series.

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ARTICLE II

ORIGINAL ISSUANCE OF CERTIFICATES:

ACQUISITION OF TRUST PROPERTY

Section 2.01. Amount Unlimited; Issuable in Series. (a) The aggregate principal amount of Certificates which may be authenticated and delivered under this Basic Agreement is unlimited. The Certificates may be issued from time to time in one or more series and shall be designated generally as the “Pass Through Certificates”, with such further designations added or incorporated in such title for the Certificates of each series as specified in the related Trust Supplement. Each Certificate shall bear upon its face the designation so selected for the series to which it belongs. All Certificates of the same series shall be substantially identical except that the Certificates of a series may differ as to denomination and as may otherwise be provided in the Trust Supplement establishing the Certificates of such series. Each series of Certificates issued pursuant to this Agreement will evidence fractional undivided interests in the related Trust and, except as may be contained in any Intercreditor Agreement, will have no rights, benefits or interests in respect of any other Trust or the Trust Property held therein. All Certificates of the same series shall be in all respects equally and ratably entitled to the benefits of this Agreement without preference, priority or distinction on account of the actual time or times of authentication and delivery, all in accordance with the terms and provisions of this Agreement.

(b) The following matters shall be established with respect to the Certificates of each series issued hereunder by a Trust Supplement executed and delivered by and among the Company and the Trustee:

(1) the formation of the Trust as to which the Certificates of such series represent fractional undivided interests and its designation (which designation shall distinguish such Trust from each other Trust created under this Basic Agreement and a Trust Supplement);

(2) the specific title of the Certificates of such series (which title shall distinguish the Certificates of such series from each other series of Certificates created under this Basic Agreement and a Trust Supplement);

(3) any limit upon the aggregate principal amount of the Certificates of such series which may be authenticated and delivered (which limit shall not pertain to Certificates authenticated and delivered upon registration of transfer of, or in exchange for, or in lieu of, other Certificates of the series pursuant to Sections 3.03, 3.04 and 3.06);

(4) the Cut-off Date with respect to the Certificates of such series;

(5) the Regular Distribution Dates applicable to the Certificates of such series;

(6) the Special Distribution Dates applicable to the Certificates of such series;

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(7) if other than as provided in Section 7.12(b), the Registrar or the Paying Agent for the Certificates of such series, including any Co-Registrar or additional Paying Agent;

(8) if other than as provided in Section 3.02, the denominations in which the Certificates of such series shall be issuable;

(9) if other than United States dollars, the currency or currencies (including currency units) in which the Certificates of such series shall be denominated;

(10) the specific form of the Certificates of such series (including the interest rate applicable thereto) and whether or not Certificates of such series are to be issued as Book-Entry Certificates and, if such Certificates are to be Book-Entry Certificates, the form of Letter of Representations, if any (or, in the case of any Certificates denominated in a currency other than United States dollars and if other than as provided in Section 3.05, whether and the circumstances under which beneficial owners of interests in such Certificates in permanent global form may exchange such interests for Certificates of such series and of like tenor of any authorized form and denomination);

(11) a description of the Equipment Notes to be acquired and held in the related Trust and of the related Aircraft and Note Documents;

(12) provisions with respect to the terms for which the definitions set forth in Article I hereof or the terms of Section 11.01 hereof require further specification in the related Trust Supplement;

(13) any restrictions (including legends) in respect of ERISA;

(14) whether such series will be subject to an Intercreditor Agreement and, if so, the specific designation of such Intercreditor Agreement;

(15) whether such series will have the benefit of a Liquidity Facility and, if so, the specific designation of such Liquidity Facility; and

(16) any other terms of the Certificates of such series (which terms shall not be inconsistent with the provisions of the Trust Indenture Act), including any terms of the Certificates of such series which may be required or advisable under United States laws or regulations or advisable in connection with the marketing of Certificates of the series.

(c) At any time and from time to time after the execution and delivery of this Basic Agreement and a Trust Supplement forming a Trust and establishing the terms of Certificates of a series, Certificates of such series shall be executed, authenticated and delivered by the Trustee to the Person or Persons specified by the Company upon request of the Company and upon satisfaction or waiver of any conditions precedent set forth in such Trust Supplement.

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Section 2.02. Acquisition of Equipment Notes. Unless otherwise specified in the related Trust Supplement, on or prior to the Issuance Date of the Certificates of a series, the Trustee shall execute and deliver the related Note Purchase Agreements in the form delivered to the Trustee by the Company and shall, subject to the respective terms thereof, perform its obligations under such Note Purchase Agreements. The Trustee shall issue and sell such Certificates, in authorized denominations and in such Fractional Undivided Interests, so as to result in the receipt of consideration in an amount equal to the aggregate purchase price of the Equipment Notes contemplated to be purchased by the Trustee under the related Note Purchase Agreements and, concurrently therewith, the Trustee shall purchase, pursuant to the terms and conditions of the Note Purchase Agreements, such Equipment Notes at a purchase price equal to the amount of such consideration so received. Except as provided in Sections 3.03, 3.04 and 3.06 hereof, the Trustee shall not execute, authenticate or deliver Certificates of such series in excess of the aggregate amount specified in this paragraph.

Section 2.03. Acceptance by Trustee. The Trustee, upon the execution and delivery of a Trust Supplement creating a Trust and establishing a series of Certificates, shall acknowledge its acceptance of all right, title and interest in and to the Trust Property to be acquired pursuant to Section 2.02 hereof and the related Note Purchase Agreements and shall declare that the Trustee holds and will hold such right, title and interest for the benefit of all then present and future Certificateholders of such series, upon the trusts herein and in such Trust Supplement set forth. By the acceptance of each Certificate of such series issued to it under this Agreement, each initial Holder of such series as grantor of such Trust shall thereby join in the creation and declaration of such Trust.

Section 2.04. Limitation of Powers. Each Trust shall be constituted solely for the purpose of making the investment in the Equipment Notes provided for in the related Trust Supplement, and, except as set forth herein, the Trustee shall not be authorized or empowered to acquire any other investments or engage in any other activities and, in particular, the Trustee shall not be authorized or empowered to do anything that would cause such Trust to fail to qualify as a “grantor trust” for federal income tax purposes.

ARTICLE III

THE CERTIFICATES

Section 3.01. Form, Denomination and Execution of Certificates. The Certificates of each series shall be issued in fully registered form without coupons and shall be substantially in the form attached to the related Trust Supplement, with such omissions, variations and insertions as are permitted by this Agreement, and may have such letters, numbers or other marks of identification and such legends or endorsements placed thereon as may be required to comply with the rules of any securities exchange on which such Certificates may be listed or to conform to any usage in respect thereof, or as may, consistently herewith, be determined by the Trustee or the officers executing such Certificates, as evidenced by the Trustee’s or respective officers’ execution of the Certificates.

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Except as provided in Section 3.05, the definitive Certificates of such series shall be typed, printed, lithographed or engraved or produced by any combination of these methods or may be produced in any other manner permitted by the rules of any securities exchange on which the Certificates may be listed, all as determined by the officers executing such Certificates, as evidenced by their execution of such Certificates.

Except as otherwise provided in the related Trust Supplement, the Certificates of each series shall be issued in minimum denominations of $1,000 or integral multiples thereof except that one Certificate of such series may be issued in a different denomination.

The Certificates of such series shall be executed on behalf of the Trustee by manual or facsimile signature of a Responsible Officer of the Trustee. Certificates of any series bearing the manual or facsimile signature of an individual who was, at the time when such signature was affixed, authorized to sign on behalf of the Trustee shall be valid and binding obligations of the Trustee, notwithstanding that such individual has ceased to be so authorized prior to the authentication and delivery of such Certificates or did not hold such office at the date of such Certificates.

Section 3.02. Authentication of Certificates. (a) On the Issuance Date, the Trustee shall duly execute, authenticate and deliver Certificates of each series in authorized denominations equaling in the aggregate the aggregate principal amount of the Equipment Notes that may be purchased by the Trustee pursuant to the related Note Purchase Agreements, and evidencing the entire ownership of the related Trust. Thereafter, the Trustee shall duly execute, authenticate and deliver the Certificates of such series as herein provided.

(b) No Certificate of any series shall be entitled to any benefit under this Agreement, or be valid for any purpose, unless there appears on such Certificate a certificate of authentication substantially in the form attached to the Trust Supplement establishing such series of Certificates executed by the Trustee by manual signature, and such certificate of authentication upon any Certificate shall be conclusive evidence, and the only evidence, that such Certificate has been duly authenticated and delivered hereunder. All Certificates of any series shall be dated the date of their authentication.

Section 3.03. Temporary Certificates. Until definitive Certificates are ready for delivery, the Trustee shall execute, authenticate and deliver temporary Certificates of each series. Temporary Certificates of each series shall be substantially in the form of definitive Certificates of such series but may have insertions, substitutions, omissions and other variations determined to be appropriate by the officers executing the temporary Certificates of such series, as evidenced by their execution of such temporary Certificates. If temporary Certificates of any series are issued, the Trustee will cause definitive Certificates of such series to be prepared without unreasonable delay. After the preparation of definitive Certificates of such series, the temporary Certificates shall be exchangeable for definitive Certificates upon surrender of such temporary Certificates at the office or agency of the Trustee designated for such purpose pursuant to Section 7.12, without charge to the Certificateholder. Upon surrender for cancellation of any one or more temporary Certificates, the Trustee shall execute, authenticate and deliver in exchange

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therefor a like face amount of definitive Certificates of like series, in authorized denominations and of a like Fractional Undivided Interest. Until so exchanged, such temporary Certificates shall be entitled to the same benefits under this Agreement as definitive Certificates.

Section 3.04. Transfer and Exchange. The Trustee shall cause to be kept at the office or agency to be maintained by it in accordance with the provisions of Section 7.12 a register (the “Register”) for each series of Certificates in which, subject to such reasonable regulations as it may prescribe, the Trustee shall provide for the registration of Certificates of such series and of transfers and exchanges of such Certificates as herein provided. The Trustee shall initially be the registrar (the “Registrar”) for the purpose of registering such Certificates of each series and transfers and exchanges of such Certificates as herein provided.

All Certificates issued upon any registration of transfer or exchange of Certificates of any series shall be valid obligations of the applicable Trust, evidencing the same interest therein, and entitled to the same benefits under this Agreement, as the Certificates of such series surrendered upon such registration of transfer or exchange.

Upon surrender for registration of transfer of any Certificate at the Corporate Trust Office or such other office or agency, the Trustee shall execute, authenticate and deliver, in the name of the designated transferee or transferees, one or more new Certificates of like series, in authorized denominations of a like aggregate Fractional Undivided Interest.

At the option of a Certificateholder, Certificates may be exchanged for other Certificates of like series, in authorized denominations and of a like aggregate Fractional Undivided Interest, upon surrender of the Certificates to be exchanged at any such office or agency. Whenever any Certificates are so surrendered for exchange, the Trustee shall execute, authenticate and deliver the Certificates that the Certificateholder making the exchange is entitled to receive. Every Certificate presented or surrendered for registration of transfer or exchange shall be duly endorsed or accompanied by a written instrument of transfer in form satisfactory to the Trustee and the Registrar duly executed by the Certificateholder thereof or its attorney duly authorized in writing.

No service charge shall be made to a Certificateholder for any registration of transfer or exchange of Certificates, but the Trustee shall require payment of a sum sufficient to cover any tax or governmental charge that may be imposed in connection with any transfer or exchange of Certificates. All Certificates surrendered for registration of transfer or exchange shall be cancelled and subsequently destroyed by the Trustee.

Section 3.05. Book-Entry and Definitive Certificates. (a) The Certificates of any series may be issued in the form of one or more typewritten Certificates representing the Book-Entry Certificates of such series, to be delivered to The Depository Trust Company, the initial Clearing Agency, by, or on behalf of, the Company. In such case, the Certificates of such series delivered to The Depository Trust Company shall initially be registered on the Register in the name of CEDE & Co., the nominee of the initial Clearing Agency, and no Certificate Owner will receive a definitive certificate representing such Certificate Owner’s interest in the Certificates of

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such series, except as provided above and in Subsection (d) below. As to the Certificates of any series, unless and until definitive, fully registered Certificates (the “Definitive Certificates”) have been issued pursuant to Subsection (d) below:

(i) the provisions of this Section 3.05 shall be in full force and effect;

(ii) the Company, the Paying Agent, the Registrar and the Trustee may deal with the Clearing Agency Participants for all purposes (including the making of distributions on the Certificates) as the authorized representatives of the Certificate Owners;

(iii) to the extent that the provisions of this Section 3.05 conflict with any other provisions of this Agreement (other than the provisions of any Trust Supplement expressly amending this Section 3.05 as permitted by this Basic Agreement), the provisions of this Section 3.05 shall control;

(iv) the rights of Certificate Owners shall be exercised only through the Clearing Agency and shall be limited to those established by law and agreements between such Certificate Owners and the Clearing Agency Participants; and until Definitive Certificates are issued pursuant to Subsection (d) below, the Clearing Agency will make book-entry transfers among the Clearing Agency Participants and receive and transmit distributions of principal, interest and premium, if any, on the Certificates to such Clearing Agency Participants; and

(v) whenever this Agreement requires or permits actions to be taken based upon instructions or directions of Certificateholders of such series holding Certificates of such series evidencing a specified percentage of the Fractional Undivided Interests in the related Trust, the Clearing Agency shall be deemed to represent such percentage only to the extent that it has received instructions to such effect from Clearing Agency Participants owning or representing, respectively, such required percentage of the beneficial interest in Certificates of such series and has delivered such instructions to the Trustee. The Trustee shall have no obligation to determine whether the Clearing Agency has in fact received any such instructions.

(b) Whenever notice or other communication to the Certificateholders of such series is required under this Agreement, unless and until Definitive Certificates shall have been issued pursuant to Subsection (d) below, the Trustee shall give all such notices and communications specified herein to be given to Certificateholders of such series to the Clearing Agency.

(c) Unless and until Definitive Certificates of a series are issued pursuant to Subsection (d) below, on the Record Date prior to each applicable Regular Distribution Date and Special Distribution Date, the Trustee will request from the Clearing Agency a securities position listing setting forth the names of all Clearing Agency Participants reflected on the Clearing Agency’s books as holding interests in the Certificates on such Record Date.

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(d) If with respect to the Certificates of any series (i) the Company advises the Trustee in writing that the Clearing Agency is no longer willing or able to discharge properly its responsibilities and the Trustee or the Company is unable to locate a qualified successor, (ii) the Company, at its option, advises the Trustee in writing that it elects to terminate the book-entry system through the Clearing Agency or (iii) after the occurrence of an Event of Default, Certificate Owners of Book-Entry Certificates of such series evidencing Fractional Undivided Interests aggregating not less than a majority in interest in the related Trust, by Act of such Certificate Owners delivered to the Company and the Trustee, advise the Company, the Trustee and the Clearing Agency through the Clearing Agency Participants in writing that the continuation of a book-entry system through the Clearing Agency Participants is no longer in the best interests of the Certificate Owners of such series, then the Trustee shall notify all Certificate Owners of such series, through the Clearing Agency, of the occurrence of any such event and of the availability of Definitive Certificates. Upon surrender to the Trustee of all the Certificates of such series held by the Clearing Agency, accompanied by registration instructions from the Clearing Agency Participants for registration of Definitive Certificates in the names of Certificate Owners of such series, the Trustee shall issue and deliver the Definitive Certificates of such series in accordance with the instructions of the Clearing Agency. Neither the Company, the Registrar, the Paying Agent nor the Trustee shall be liable for any delay in delivery of such instructions and may conclusively rely on, and shall be protected in relying on, such registration instructions. Upon the issuance of Definitive Certificates of such series, the Trustee shall recognize the Person in whose name the Definitive Certificates are registered in the Register as Certificateholders hereunder. Neither the Company nor the Trustee shall be liable if the Trustee or the Company is unable to locate a qualified successor Clearing Agency.

(e) Except as otherwise provided in the related Trust Supplement, the Trustee shall enter into the applicable Letter of Representations with respect to such series of Certificates and fulfill its responsibilities thereunder.

(f) The provisions of this Section 3.05 may be made inapplicable to any series or may be amended with respect to any series in the related Trust Supplement.

Section 3.06. Mutilated, Destroyed, Lost or Stolen Certificates. If (a) any mutilated Certificate is surrendered to the Registrar, or the Registrar receives evidence to its satisfaction of the destruction, loss or theft of any Certificate, and (b) there is delivered to the Registrar and the Trustee such security, indemnity or bond, as may be required by them to save each of them harmless, then, in the absence of notice to the Registrar or the Trustee that such destroyed, lost or stolen Certificate has been acquired by a bona fide purchaser, and provided, however, that the requirements of Section 8-405 of the Uniform Commercial Code in effect in any applicable jurisdiction are met, the Trustee shall execute, authenticate and deliver, in exchange for or in lieu of any such mutilated, destroyed, lost or stolen Certificate, a new Certificate or Certificates of like series, in authorized denominations and of like Fractional Undivided Interest and bearing a number not contemporaneously outstanding.

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In connection with the issuance of any new Certificate under this Section 3.06, the Trustee shall require the payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in relation thereto and any other expenses (including the fees and expenses of the Trustee and the Registrar) connected therewith.

Any duplicate Certificate issued pursuant to this Section 3.06 shall constitute conclusive evidence of the appropriate Fractional Undivided Interest in the related Trust, as if originally issued, whether or not the lost, stolen or destroyed Certificate shall be found at any time.

The provisions of this Section 3.06 are exclusive and shall preclude (to the extent lawful) all other rights and remedies with respect to the replacement or payment of mutilated, destroyed, lost or stolen Certificates.

Section 3.07. Persons Deemed Owners. Prior to due presentment of a Certificate for registration of transfer, the Trustee, the Registrar and any Paying Agent may treat the Person in whose name any Certificate is registered (as of the day of determination) as the owner of such Certificate for the purpose of receiving distributions pursuant to Article IV and for all other purposes whatsoever, and none of the Trustee, the Registrar or any Paying Agent shall be affected by any notice to the contrary.

Section 3.08. Cancellation. All Certificates surrendered for payment or transfer or exchange shall, if surrendered to the Trustee or any agent of the Trustee other than the Registrar, be delivered to the Registrar for cancellation and shall promptly be cancelled by it. No Certificates shall be authenticated in lieu of or in exchange for any Certificates cancelled as provided in this Section 3.08, except as expressly permitted by this Agreement. All cancelled Certificates held by the Registrar shall be destroyed and a certification of their destruction delivered to the Trustee.

Section 3.09. Limitation of Liability for Payments. All payments and distributions made to Certificateholders of any series in respect of the Certificates of such series shall be made only from the Trust Property of the related Trust and only to the extent that the Trustee shall have sufficient income or proceeds from such Trust Property to make such payments in accordance with the terms of Article IV of this Agreement. Each Certificateholder, by its acceptance of a Certificate, agrees that it will look solely to the income and proceeds from the Trust Property of the related Trust for any payment or distribution due to such Certificateholder pursuant to the terms of this Agreement and that it will not have any recourse to the Company, the Trustee, any Liquidity Provider or the Loan Trustees, except as otherwise expressly provided herein or in the related Intercreditor Agreement.

The Company is a party to this Agreement solely for purposes of meeting the requirements of the Trust Indenture Act, and therefore shall not have any right, obligation or liability hereunder (except as otherwise expressly provided herein).

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ARTICLE IV

DISTRIBUTIONS; STATEMENTS TO

CERTIFICATEHOLDERS

Section 4.01. Certificate Account and Special Payments Account. (a) The Trustee shall establish and maintain on behalf of the Certificateholders of each series a Certificate Account as one or more non-interest-bearing accounts. The Trustee shall hold such Certificate Account in trust for the benefit of the Certificateholders of such series, and shall make or permit withdrawals therefrom only as provided in this Agreement. On each day when a Scheduled Payment is made to the Trustee (under an Intercreditor Agreement, if applicable) with respect to the Certificates of such series, the Trustee, upon receipt thereof, shall immediately deposit the aggregate amount of such Scheduled Payment in such Certificate Account.

(b) The Trustee shall establish and maintain on behalf of the Certificateholders of each series a Special Payments Account as one or more accounts, which shall be non-interest bearing except as provided in Section 4.04. The Trustee shall hold the Special Payments Account in trust for the benefit of the Certificateholders of such series and shall make or permit withdrawals therefrom only as provided in this Agreement. On each day when one or more Special Payments are made to the Trustee (under an Intercreditor Agreement, if applicable) with respect to the Certificates of such series, the Trustee, upon receipt thereof, shall immediately deposit the aggregate amount of such Special Payments in such Special Payments Account.

(c) The Trustee shall present (or, if applicable, cause the Subordination Agent to present) to the related Loan Trustee of each Equipment Note such Equipment Note on the date of its stated final maturity or, in the case of any Equipment Note which is to be redeemed in whole pursuant to the related Indenture, on the applicable redemption date under such Indenture.

Section 4.02. Distributions from Certificate Account and Special Payments Account. (a) On each Regular Distribution Date with respect to a series of Certificates or as soon thereafter as the Trustee has confirmed receipt of the payment of all or any part of the Scheduled Payments due on the Equipment Notes held (subject to the Intercreditor Agreement) in the related Trust on such date, the Trustee shall distribute out of the applicable Certificate Account the entire amount deposited therein pursuant to Section 4.01(a). There shall be so distributed to each Certificateholder of record of such series on the Record Date with respect to such Regular Distribution Date (other than as provided in Section 11.01 concerning the final distribution) by check mailed to such Certificateholder, at the address appearing in the Register, such Certificateholder’s pro rata share (based on the Fractional Undivided Interest in the Trust held by such Certificateholder) of the total amount in the applicable Certificate Account, except that, with respect to Certificates registered on the Record Date in the name of a Clearing Agency (or its nominee), such distribution shall be made by wire transfer in immediately available funds to the account designated by such Clearing Agency (or such nominee).

(b) On each Special Distribution Date with respect to any Special Payment with respect to a series of Certificates or as soon thereafter as the Trustee has confirmed receipt of any Special Payments due on the Equipment Notes held (subject to the Intercreditor

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Agreement) in the related Trust or realized upon the sale of such Equipment Notes, the Trustee shall distribute out of the applicable Special Payments Account the entire amount of such applicable Special Payment deposited therein pursuant to Section 4.01(b). There shall be so distributed to each Certificateholder of record of such series on the Record Date with respect to such Special Distribution Date (other than as provided in Section 11.01 concerning the final distribution) by check mailed to such Certificateholder, at the address appearing in the Register, such Certificateholder’s pro rata share (based on the Fractional Undivided Interest in the related Trust held by such Certificateholder) of the total amount in the applicable Special Payments Account on account of such Special Payment, except that, with respect to Certificates registered on the Record Date in the name of a Clearing Agency (or its nominee), such distribution shall be made by wire transfer in immediately available funds to the account designated by such Clearing Agency (or such nominee).

(c) The Trustee shall, at the expense of the Company, cause notice of each Special Payment with respect to a series of Certificates to be mailed to each Certificateholder of such series at his address as it appears in the Register. In the event of redemption or purchase of Equipment Notes held in the related Trust, such notice shall be mailed not less than 15 days prior to the Special Distribution Date for the Special Payment resulting from such redemption or purchase, which Special Distribution Date shall be the date of such redemption or purchase. In the case of any other Special Payments, such notice shall be mailed as soon as practicable after the Trustee has confirmed that it has received funds for such Special Payment, stating the Special Distribution Date for such Special Payment which shall occur not less than 15 days after the date of such notice and as soon as practicable thereafter. Notices mailed by the Trustee shall set forth:

(i) the Special Distribution Date and the Record Date therefor (except as otherwise provided in Section 11.01),

(ii) the amount of the Special Payment for each $1,000 face amount Certificate and the amount thereof constituting principal, Break Amount, premium, if any, and interest,

(iii) the reason for the Special Payment, and

(iv) if the Special Distribution Date is the same date as a Regular Distribution Date for the Certificates of such series, the total amount to be received on such date for each $1,000 face amount Certificate.

If the amount of premium, if any, payable upon the redemption or purchase of an Equipment Note has not been calculated at the time that the Trustee mails notice of a Special Payment, it shall be sufficient if the notice sets forth the other amounts to be distributed and states that any premium received will also be distributed.

If any redemption of the Equipment Notes held in any Trust is canceled, the Trustee, as soon as possible after learning thereof, shall cause notice thereof to be mailed to each Certificateholder of the related series at its address as it appears on the Register.

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Section 4.03. Statements to Certificateholders. (a) On each Distribution Date, the Trustee will include with each distribution to Certificateholders of a related series of a Scheduled Payment or Special Payment, as the case may be, a statement setting forth the information provided below. Such statement shall set forth (per $1,000 face amount of Certificate as to (ii) and (iii) below) the following information:

(i) the aggregate amount of funds distributed on such Distribution Date under the Agreement, indicating the amount allocable to each source, including any portion thereof paid by the Liquidity Providers;

(ii) the amount of such distribution hereunder allocable to principal and the amount allocable to Break Amount and to premium, if any;

(iii) the amount of such distribution hereunder allocable to interest;

(iv) the Pool Balance and the Pool Factor of the related Trust; and

(v) Six-Month LIBOR (as defined in the Indentures) for the current and immediately preceding interest periods.

With respect to the Certificates registered in the name of a Clearing Agency or its nominee, on the Record Date prior to each Distribution Date, the Trustee will request that such Clearing Agency post on its Internet bulletin board a securities position listing setting forth the names of all Clearing Agency Participants reflected on such Clearing Agency’s books as holding interests in the Certificates on such Record Date. On each Distribution Date, the applicable Trustee will mail to each such Clearing Agency Participant the statement described above and will make available additional copies as requested by such Clearing Agency Participant for forwarding to holders of interests in the Certificates.

(b) Within a reasonable period of time after the end of each calendar year but not later than the latest date permitted by law, the Trustee shall furnish to each Person who at any time during such calendar year was a Certificateholder of record a statement containing the sum of the amounts determined pursuant to clauses (a)(i), (a)(ii) and (a)(iii) above with respect to the related Trust for such calendar year or, in the event such Person was a Certificateholder of record during a portion of such calendar year, for such portion of such year, and such other items as are readily available to the Trustee and which a Certificateholder shall reasonably request as necessary for the purpose of such Certificateholder’s preparation of its U.S. federal income tax returns. With respect to Certificates registered in the name of a Clearing Agency or its nominee, such statement and such other items shall be prepared on the basis of information supplied to the Trustee by the Clearing Agency Participants and shall be delivered by the Trustee to such Clearing Agency Participants to be available for forwarding by such Clearing Agency Participants to the holders of interests in the Certificates in the manner described in Section 4.03(a).

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(c) The Trustee shall provide promptly to the Certificateholders of each series all material non-confidential information received by the Trustee from the Company.

Section 4.04. Investment of Special Payment Moneys. Any money received by the Trustee pursuant to Section 4.01(b) representing a Special Payment which is not distributed on the date received shall, to the extent practicable, be invested in Permitted Investments by the Trustee pending distribution of such Special Payment pursuant to Section 4.02. Any investment made pursuant to this Section 4.04 shall be in such Permitted Investments having maturities not later than the date that such moneys are required to be used to make the payment required under Section 4.02 on the applicable Special Distribution Date and the Trustee shall hold any such Permitted Investments until maturity. The Trustee shall have no liability with respect to any investment made pursuant to this Section 4.04, other than by reason of the willful misconduct or negligence of the Trustee. All income and earnings from such investments shall be distributed on such Special Distribution Date as part of such Special Payment.

ARTICLE V

THE COMPANY

Section 5.01. Maintenance of Corporate Existence. The Company, at its own cost and expense, will do or cause to be done all things necessary to preserve and keep in full force and effect its corporate existence, rights and franchises, except as otherwise specifically permitted in Section 5.02; provided, however, that the Company shall not be required to preserve any right or franchise if the Company shall determine that the preservation thereof is no longer desirable in the conduct of the business of the Company.

Section 5.02. Consolidation, Merger, Etc. The Company shall not consolidate with or merge into any other person under circumstances in which the Company is not the surviving corporation or convey, transfer or lease substantially all of its assets as an entirety to any Person unless:

(a) the Person formed by such consolidation or into which the Company is merged or the Person that acquires by conveyance, transfer or lease substantially all of the assets of the Company as an entirety shall be (i) organized and validly existing under the laws of the United States of America or any state thereof or the District of Columbia, (ii) a “citizen of the United States” as defined in 49 U.S.C. § 40102(a)(15), as amended, and (iii) a United States certificated air carrier, if and so long as such status is a condition of entitlement to the benefits of Section 1110 of the Bankruptcy Reform Act of 1978, as amended (11 U.S.C. § 1110), with respect to the Aircraft owned by the Company;

(b) the Person formed by such consolidation or into which the Company is merged or the Person which acquires by conveyance, transfer or lease substantially all of the assets of the Company as an entirety shall execute and deliver to the Trustee applicable to the Certificates of each series a duly authorized, valid, binding and enforceable agreement in form and substance reasonably satisfactory to the Trustee containing an assumption by such successor

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corporation or Person of the due and punctual performance and observance of each covenant and condition of the Note Documents and of this Agreement applicable to the Certificates of each series to be performed or observed by the Company; and

(c) the Company shall have delivered to the Trustee applicable to the Certificates of each series, an Officer’s Certificate, and an Opinion of Counsel, each stating that such consolidation, merger, conveyance, transfer or lease comply with this Section 5.02 and that all conditions precedent herein provided relating to such transaction have been complied with (except that such opinion may rely, as to factual matters, on a certificate of an officer of the Company).

Upon any consolidation or merger, or any conveyance, transfer or lease of substantially all of the assets of the Company as an entirety in accordance with this Section 5.02, the successor corporation or Person formed by such consolidation or into which the Company is merged or to which such conveyance, transfer or lease is made shall succeed to, and be substituted for, and may exercise every right and power of, the Company under this Agreement applicable to the Certificates of each series with the same effect as if such successor corporation or Person had been named as the Company herein. No such conveyance, transfer or lease of substantially all of the assets of the Company as an entirety shall have the effect of releasing any successor corporation or Person which shall have become such in the manner prescribed in this Section 5.02 from its liability in respect of this Agreement and any Note Document applicable to the Certificates of such series to which it is a party.

ARTICLE VI

DEFAULT

Section 6.01. Events of Default. (a) Exercise of Remedies. Upon the occurrence and during the continuation of any Indenture Event of Default under any Indenture, the Trustee may (i) to the extent it is the Controlling Party at such time (as determined pursuant to the related Intercreditor Agreement), direct the exercise of remedies as provided in such related Intercreditor Agreement and (ii) if there is no related Intercreditor Agreement, direct the exercise of remedies or take other action as provided in the relevant Indenture to the extent that it may do so as the holder of the Equipment Notes issued under such Indenture and held in the related Trust.

(b) Purchase Rights of Certificateholders. At any time after the occurrence and during the continuation of a Triggering Event, each Certificateholder of Certificates of certain series (each, a “Potential Purchaser” and, collectively, the “Potential Purchasers”) will have certain rights to purchase the Certificates of one or more other series, all as set forth in the Trust Supplement applicable to the Certificates held by such Potential Purchaser. The purchase price with respect to the Certificates of any series shall be equal to the Pool Balance of the Certificates of such series, together with accrued and unpaid interest thereon to the date of such purchase, without premium, but including any other amounts then due and payable to the Certificateholders of such series under this Agreement, any related Intercreditor Agreement or any other Note Document or on or in respect of the Certificates of such series; provided,

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however, that if such purchase occurs after a Record Date, such purchase price shall be reduced by the amount to be distributed hereunder on the related Distribution Date (which deducted amounts shall remain distributable to, and may be retained by, the Certificateholder as of such Record Date); provided, further, that no such purchase of Certificates of such series shall be effective unless the purchasing Certificateholder (each, a “Purchasing Certificateholder” and, collectively, the “Purchasing Certificateholders”) shall certify to the Trustee that contemporaneously with such purchase, one or more Purchasing Certificateholders are purchasing, pursuant to the terms of this Agreement and the other Agreements, if any, relating to the Certificates of a series that are subject to the same Intercreditor Agreement (such other Agreements, the “Other Agreements”), the Certificates of each such series that the Trust Supplement applicable to the Certificates held by the Purchasing Certificateholder specifies may be purchased by such Purchasing Certificateholder. Each payment of the purchase price of the Certificates of any series shall be made to an account or accounts designated by the Trustee and each such purchase shall be subject to the terms of this Section 6.01. By acceptance of its Certificate, each Certificateholder (each, a “Selling Certificateholder” and, collectively, the “Selling Certificateholders”) of a series that is subject to purchase by Potential Purchasers, all as set forth in the Trust Supplement applicable to the Certificates held by the Selling Certificateholders, agrees that, at any time after the occurrence and during the continuance of a Triggering Event, it will, upon payment of the purchase price specified herein by one or more Purchasing Certificateholders, forthwith sell, assign, transfer and convey to such Purchasing Certificateholder (without recourse, representation or warranty of any kind except for its own acts), all of the right, title, interest and obligation of such Selling Certificateholder in this Agreement, any related Intercreditor Agreement, the related Liquidity Facility, the related Note Documents and all Certificates of such series held by such Selling Certificateholder (excluding all right, title and interest under any of the foregoing to the extent such right, title or interest is with respect to an obligation not then due and payable as respects any action or inaction or state of affairs occurring prior to such sale) and the Purchasing Certificateholder shall assume all of such Selling Certificateholder’s obligations under this Agreement, any related Intercreditor Agreement, the related Liquidity Facility and the related Note Documents. The Certificates of such series will be deemed to be purchased on the date payment of the purchase price is made notwithstanding the failure of any Selling Certificateholder to deliver any Certificates of such series and, upon such a purchase, (i) the only rights of the Selling Certificateholders will be to deliver the Certificates to the Purchasing Certificateholder and receive the purchase price for such Certificates of such series and (ii) if the Purchasing Certificateholder shall so request, such Selling Certificateholder will comply with all of the provisions of Section 3.04 hereof to enable new Certificates of such series to be issued to the Purchasing Certificateholder in such denominations as it shall request. All charges and expenses in connection with the issuance of any such new Certificates shall be borne by the Purchasing Certificateholder.

Section 6.02. Incidents of Sale of Equipment Notes. Upon any sale of all or any part of the Equipment Notes held in the Trust made either under the power of sale given under this Agreement or otherwise for the enforcement of this Agreement, the following shall be applicable:

(1) Certificateholders and Trustee May Purchase Equipment Notes. Any Certificateholder, the Trustee in its individual or any other capacity or any other Person may bid for and purchase any of the Equipment Notes held in the Trust, and upon compliance with the terms of sale, may hold, retain, possess and dispose of such Equipment Notes in their own absolute right without further accountability.

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(2) Receipt of Trustee Shall Discharge Purchaser. The receipt of the Trustee making such sale shall be a sufficient discharge to any purchaser for his purchase money, and, after paying such purchase money and receiving such receipt, such purchaser or its personal representative or assigns shall not be obliged to see to the application of such purchase money, or be in any way answerable for any loss, misapplication or non-application thereof.

(3) Application of Moneys Received upon Sale. Any moneys collected by the Trustee upon any sale made either under the power of sale given by this Agreement or otherwise for the enforcement of this Agreement shall be applied as provided in Section 4.02.

Section 6.03. Judicial Proceedings Instituted by Trustee; Trustee May Bring Suit. If there shall be a failure to make payment of the principal of, premium, if any, or interest on any Equipment Note held in the related Trust when due and payable, then the Trustee, in its own name and as trustee of an express trust, as holder of such Equipment Notes, to the extent permitted by and in accordance with the terms of any related Intercreditor Agreement and any related Note Documents, shall be entitled and empowered to institute any suits, actions or proceedings at law, in equity or otherwise, for the collection of the sums so due and unpaid on such Equipment Notes and may prosecute any such claim or proceeding to judgment or final decree with respect to the whole amount of any such sums so due and unpaid.

Section 6.04. Control by Certificateholders. Subject to Section 6.03 and any related Intercreditor Agreement, the Certificateholders holding Certificates of a series evidencing Fractional Undivided Interests aggregating not less than a majority in interest in the related Trust shall have the right to direct the time, method and place of conducting any proceeding for any remedy available to the Trustee with respect to such Trust or pursuant to the terms of such Intercreditor Agreement, or exercising any trust or power conferred on the Trustee under this Agreement or such Intercreditor Agreement, including any right of the Trustee as Controlling Party under such Intercreditor Agreement or as holder of the Equipment Notes held in the related Trust; provided, however, that

(1) such Direction shall not in the opinion of the Trustee be in conflict with any rule of law or with this Agreement and would not involve the Trustee in personal liability or expense,

(2) the Trustee shall not determine that the action so directed would be unjustly prejudicial to the Certificateholders of such series not taking part in such Direction, and

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(3) the Trustee may take any other action deemed proper by the Trustee which is not inconsistent with such Direction.

Section 6.05. Waiver of Past Defaults. Subject to any related Intercreditor Agreement, the Certificateholders holding Certificates of a series evidencing Fractional Undivided Interests aggregating not less than a majority in interest in the Trust (i) may on behalf of all of the Certificateholders waive any past Event of Default hereunder and its consequences or (ii) if the Trustee is the Controlling Party, may direct the Trustee to instruct the applicable Loan Trustee to waive any past Indenture Event of Default under any related Indenture and its consequences, and thereby annul any Direction given by such Certificateholder or the Trustee to such Loan Trustee with respect thereto, except a default:

(1) in the deposit of any Scheduled Payment or Special Payment under Section 4.01 or in the distribution of any payment under Section 4.02 on the Certificates of a series, or

(2) in the payment of the principal of (Break Amount, if any, or premium, if any) or interest on the Equipment Notes held in the related Trust, or

(3) in respect of a covenant or provision hereof which under Article IX hereof cannot be modified or amended without the consent of each Certificateholder holding an Outstanding Certificate of a series affected thereby.

Upon any such waiver, such default shall cease to exist with respect to the Certificates of such series and any Event of Default arising therefrom shall be deemed to have been cured for every purpose and any direction given by the Trustee on behalf of the Certificateholders of such series to the relevant Loan Trustee shall be annulled with respect thereto; but no such waiver shall extend to any subsequent or other default or Event of Default or impair any right consequent thereon. Upon any such waiver, the Trustee shall vote the Equipment Notes issued under the relevant Indenture to waive the corresponding Indenture Event of Default.

Section 6.06. Right of Certificateholders to Receive Payments Not to Be Impaired. Anything in this Agreement to the contrary notwithstanding, including, without limitation, Section 6.07 hereof, but subject to any related Intercreditor Agreement, the right of any Certificateholder to receive distributions of payments required pursuant to Section 4.02 hereof on the applicable Certificates when due, or to institute suit for the enforcement of any such payment on or after the applicable Regular Distribution Date or Special Distribution Date, shall not be impaired or affected without the consent of such Certificateholder.

Section 6.07. Certificateholders May Not Bring Suit Except Under Certain Conditions. A Certificateholder of any series shall not have the right to institute any suit, action or proceeding at law or in equity or otherwise with respect to this Agreement, for the appointment of a receiver or for the enforcement of any other remedy under this Agreement, unless:

(1) such Certificateholder previously shall have given written notice to the Trustee of a continuing Event of Default;

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(2) Certificateholders holding Certificates of such series evidencing Fractional Undivided Interests aggregating not less than 25% of the related Trust shall have requested the Trustee in writing to institute such action, suit or proceeding and shall have offered to the Trustee indemnity as provided in Section 7.03(e);

(3) the Trustee shall have refused or neglected to institute any such action, suit or proceeding for 60 days after receipt of such notice, request and offer of indemnity; and

(4) no direction inconsistent with such written request shall have been given to the Trustee during such 60-day period by Certificateholders holding Certificates of such series evidencing Fractional Undivided Interests aggregating not less than a majority in interest in the related Trust.

It is understood and intended that no one or more of the Certificateholders of any series shall have any right in any manner whatsoever hereunder or under the related Trust Supplement or under the Certificates of such series to (i) surrender, impair, waive, affect, disturb or prejudice any property in the Trust Property of the related Trust, or the lien of any related Indenture on any property subject thereto, or the rights of the Certificateholders of such series or the holders of the related Equipment Notes, (ii) obtain or seek to obtain priority over or preference with respect to any other such Certificateholder of such series or (iii) enforce any right under this Agreement, except in the manner herein provided and for the equal, ratable and common benefit of all the Certificateholders of such series subject to the provisions of this Agreement.

Section 6.08. Remedies Cumulative. Every remedy given hereunder to the Trustee or to any of the Certificateholders of any series shall not be exclusive of any other remedy or remedies, and every such remedy shall be cumulative and in addition to every other remedy given hereunder or now or hereafter given by statute, law, equity or otherwise.

Section 6.09. Undertaking for Costs. In any suit for the enforcement of any right or remedy under this Agreement, or in any suit against the Trustee for any action taken, suffered or omitted by it as Trustee, a court may require any party litigant in such suit to file an undertaking to pay the costs of such suit, and may assess costs against any such party litigant, in the manner and to the extent provided in the Trust Indenture Act; provided, however, that neither this Section 6.09 nor the Trust Indenture Act shall be deemed to authorize any court to require such an undertaking or to make such an assessment in any suit instituted by the Company.

ARTICLE VII

THE TRUSTEE

Section 7.01. Certain Duties and Responsibilities. (a) Except during the continuance of an Event of Default in respect of a Trust, the Trustee undertakes to perform such duties in respect of such Trust as are specifically set forth in this Agreement, and no implied covenants or obligations shall be read into this Agreement against the Trustee.

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(b) In case an Event of Default in respect of a Trust has occurred and is continuing, the Trustee shall exercise such of the rights and powers vested in it by this Agreement in respect of such Trust, and use the same degree of care and skill in their exercise, as a prudent man would exercise or use under the circumstances in the conduct of his own affairs.

(c) No provision of this Agreement shall be construed to relieve the Trustee from liability for its own negligent action, its own negligent failure to act, or its own willful misconduct, except that

(1) this Subsection shall not be construed to limit the effect of Subsection (a) of this Section 7.01; and

(2) the Trustee shall not be liable for any error of judgment made in good faith by a Responsible Officer of the Trustee, unless it shall be proved that the Trustee was negligent in ascertaining the pertinent facts.

(d) Whether or not herein expressly so provided, every provision of this Agreement relating to the conduct or affecting the liability of or affording protection to the Trustee shall be subject to the provisions of this Section 7.01.

Section 7.02. Notice of Defaults. As promptly as practicable after, and in any event within 90 days after, the occurrence of any default (as such term is defined below) hereunder known to the Trustee, the Trustee shall transmit by mail to the Company, the related Loan Trustees and the Certificateholders holding Certificates of the related series in accordance with Section 313(c) of the Trust Indenture Act, notice of such default hereunder known to the Trustee, unless such default shall have been cured or waived; provided, however, that, except in the case of a default in the payment of the principal, premium, if any, Break Amount, if any, or interest on any Equipment Note, the Trustee shall be protected in withholding such notice if and so long as the board of directors, the executive committee or a trust committee of directors and/or Responsible Officers of the Trustee in good faith shall determine that the withholding of such notice is in the best interests of the Certificateholders of the related series. For the purpose of this Section 7.02 in respect of any Trust, the term “default” means any event that is, or after notice or lapse of time or both would become, an Event of Default in respect of that Trust.

Section 7.03. Certain Rights of Trustee. Subject to the provisions of Section 315 of the Trust Indenture Act:

(a) the Trustee may rely and shall be protected in acting or refraining from acting in reliance upon any resolution, certificate, statement, instrument, opinion, report, notice, request, direction, consent, order, bond, debenture or other paper or document believed by it to be genuine and to have been signed or presented by the proper party or parties;

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(b) any request or direction of the Company mentioned herein shall be sufficiently evidenced by a Request;

(c) whenever in the administration of this Agreement or any Intercreditor Agreement, the Trustee shall deem it desirable that a matter be proved or established prior to taking, suffering or omitting any action hereunder, the Trustee (unless other evidence be herein specifically prescribed) may, in the absence of bad faith on its part, rely upon an Officer’s Certificate of the Company or any related Loan Trustee;

(d) the Trustee may consult with counsel and the advice of such counsel or any Opinion of Counsel shall be full and complete authorization and protection in respect of any action taken, suffered or omitted by it hereunder in good faith and in reliance thereon;

(e) the Trustee shall be under no obligation to exercise any of the rights or powers vested in it by this Agreement or any Intercreditor Agreement at the Direction of any of the Certificateholders pursuant to this Agreement or any Intercreditor Agreement, unless such Certificateholders shall have offered to the Trustee reasonable security or indemnity against the cost, expenses and liabilities which might be incurred by it in compliance with such Direction;

(f) the Trustee shall not be bound to make any investigation into the facts or matters stated in any resolution, certificate, statement, instrument, opinion, report, notice, request, direction, consent, order, bond, debenture or other paper or document;

(g) the Trustee may execute any of the trusts or powers under this Agreement or any Intercreditor Agreement or perform any duties under this Agreement or any Intercreditor Agreement either directly or by or through agents or attorneys, and the Trustee shall not be responsible for any misconduct or negligence on the part of any agent or attorney appointed with due care by it under this Agreement or any Intercreditor Agreement;

(h) the Trustee shall not be liable with respect to any action taken or omitted to be taken by it in good faith in accordance with the Direction of the Certificateholders holding Certificates of any series evidencing Fractional Undivided Interests aggregating not less than a majority in interest in the related Trust relating to the time, method and place of conducting any proceeding for any remedy available to the Trustee, or exercising any trust or power conferred upon the Trustee, under this Agreement or any Intercreditor Agreement; and

(i) the Trustee shall not be required to expend or risk its own funds in the performance of any of its duties under this Agreement, or in the exercise of any of its rights or powers, if it shall have reasonable grounds for believing that repayment of such funds or adequate indemnity against such risk is not reasonably assured to it.

Section 7.04. Not Responsible for Recitals or Issuance of Certificates. The recitals contained herein and in the Certificates of each series, except the certificates of authentication, shall not be taken as the statements of the Trustee, and the Trustee assumes no responsibility for their correctness. Subject to Section 7.15, the Trustee makes no representations as to the validity or sufficiency of this Basic Agreement, any Equipment Notes, any Intercreditor Agreement, the

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Certificates of any series, any Trust Supplement or any Note Documents, except that the Trustee hereby represents and warrants that this Basic Agreement has been, and each Trust Supplement, each Certificate, each Note Purchase Agreement and each Intercreditor Agreement of, or relating to, each series will be executed and delivered by one of its officers who is duly authorized to execute and deliver such document on its behalf.

Section 7.05. May Hold Certificates. The Trustee, any Paying Agent, Registrar or any of their Affiliates or any other agent, in their respective individual or any other capacity, may become the owner or pledgee of Certificates and, subject to Sections 310(b) and 311 of the Trust Indenture Act, if applicable, may otherwise deal with the Company or the Loan Trustees with the same rights it would have if it were not Trustee, Paying Agent, Registrar or such other agent.

Section 7.06. Money Held in Trust. Money held by the Trustee or the Paying Agent in trust under this Agreement need not be segregated from other funds except to the extent required herein or by law and neither the Trustee nor the Paying Agent shall have any liability for interest upon any such moneys except as provided for herein.

Section 7.07. Compensation and Reimbursement. The Company agrees:

(1) to pay, or cause to be paid, to the Trustee from time to time reasonable compensation for all services rendered by it hereunder (which compensation shall not be limited by any provision of law in regard to the compensation of a trustee of an express trust); and

(2) except as otherwise expressly provided herein or in any Trust Supplement, to reimburse, or cause to be reimbursed, the Trustee upon its request for all reasonable out-of-pocket expenses, disbursements and advances incurred or made by the Trustee in accordance with any provision of this Basic Agreement, any Trust Supplement or any Intercreditor Agreement (including the reasonable compensation and the expenses and disbursements of its agents and counsel), except any such expense, disbursement or advance as may be attributable to its negligence, willful misconduct or bad faith or as may be incurred due to the Trustee’s breach of its representations and warranties set forth in Section 7.15; and

(3) to indemnify, or cause to be indemnified, the Trustee with respect to the Certificates of any series, pursuant to Section 7.1 of each Participation Agreement.

The Trustee shall be entitled to reimbursement from, and shall have a lien prior to the Certificates of each series upon, all property and funds held or collected by the Trustee in its capacity as Trustee with respect to such series or the related Trust for any tax incurred without negligence, bad faith or willful misconduct, on its part, arising out of or in connection with the acceptance or administration of such Trust (other than any tax attributable to the Trustee’s compensation for serving as such), including any costs and expenses incurred in contesting the imposition of any such tax. The Trustee shall notify the Company of any claim for any tax for which it may seek reimbursement. If the Trustee reimburses itself from the Trust Property of such Trust for any such tax, it will mail a brief report within 30 days setting forth the amount of such tax and the circumstances thereof to all Certificateholders of such series as their names and addresses appear in the Register.

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Section 7.08. Corporate Trustee Required; Eligibility. Each Trust shall at all times have a Trustee which shall be eligible to act as a trustee under Section 310(a) of the Trust Indenture Act and shall have a combined capital and surplus of at least $75,000,000 (or a combined capital and surplus in excess of $5,000,000 and the obligations of which, whether now in existence or hereafter incurred, are fully and unconditionally guaranteed by a corporation organized and doing business under the laws of the United States, any state or territory thereof or of the District of Columbia and having a combined capital and surplus of at least $75,000,000). If such corporation publishes reports of conditions at least annually, pursuant to law or to the requirements of federal, state, territorial or District of Columbia supervising or examining authority, then for the purposes of this Section 7.08 the combined capital and surplus of such corporation shall be deemed to be its combined capital and surplus as set forth in its most recent report of conditions so published.

In case at any time the Trustee shall cease to be eligible in accordance with the provisions of this Section 7.08 to act as Trustee of any Trust, the Trustee shall resign immediately as Trustee of such Trust in the manner and with the effect specified in Section 7.09.

Section 7.09. Resignation and Removal; Appointment of Successor. (a) No resignation or removal of the Trustee and no appointment of a successor Trustee of any Trust pursuant to this Article shall become effective until the acceptance of appointment by the successor Trustee under Section 7.10.

(b) The Trustee may resign at any time as Trustee of any or all Trusts by giving prior written notice thereof to the Company, the Authorized Agents and the related Loan Trustees. If an instrument of acceptance by a successor Trustee shall not have been delivered to the Company and the Trustee within 30 days after the giving of such notice of resignation, the resigning Trustee may petition any court of competent jurisdiction for the appointment of a successor Trustee.

(c) The Trustee may be removed at any time by Direction of the Certificateholders of the related series holding Certificates evidencing Fractional Undivided Interests aggregating not less than a majority in interest in such Trust delivered to the Trustee and to the Company and the related Loan Trustees.

(d) If at any time in respect of any Trust:

(1) the Trustee shall fail to comply with Section 310 of the Trust Indenture Act, if applicable, after written request therefor by the Company or by any Certificateholder who has been a bona fide Certificateholder for at least six months; or

(2) the Trustee shall cease to be eligible under Section 7.08 and shall fail to resign after written request therefor by the Company or by any such Certificateholder; or

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(3) the Trustee shall become incapable of acting or shall be adjudged a bankrupt or insolvent, or a receiver of the Trustee or of its property shall be appointed or any public officer shall take charge or control of the Trustee or of its property or affairs for the purpose of rehabilitation, conservation or liquidation;

then, in any case, (i) the Company may remove the Trustee or (ii) any Certificateholder of the related series who has been a bona fide Certificateholder for at least six months may, on behalf of itself and all others similarly situated, petition any court of competent jurisdiction for the removal of the Trustee and the appointment of a successor Trustee of such Trust.

(e) If a Responsible Officer of the Trustee shall obtain actual knowledge of an Avoidable Tax in respect of any Trust which has been or is likely to be asserted, the Trustee shall promptly notify the Company and shall, within 30 days of such notification, resign as Trustee of such Trust hereunder unless within such 30-day period the Trustee shall have received notice that the Company has agreed to pay such tax. The Company shall promptly appoint a successor Trustee of such Trust in a jurisdiction where there are no Avoidable Taxes.

(f) If the Trustee shall resign, be removed or become incapable of acting as Trustee of any Trust or if a vacancy shall occur in the office of the Trustee of any Trust for any cause, the Company shall promptly appoint a successor Trustee of such Trust. If, within one year after such resignation, removal or incapability, or other occurrence of such vacancy, a successor Trustee of such Trust shall be appointed by Direction of the Certificateholders of the related series holding Certificates of such series evidencing Fractional Undivided Interests aggregating not less than a majority in interest in such Trust delivered to the Company, the related Loan Trustee and the retiring Trustee, then the successor Trustee of such Trust so appointed shall, with the approval of the Company of such appointment, which approval shall not be unreasonably withheld, forthwith upon its acceptance of such appointment, become the successor Trustee of such Trust and supersede the successor Trustee of such Trust appointed as provided above. If no successor Trustee shall have been so appointed as provided above and accepted appointment in the manner hereinafter provided, the resigning Trustee or any Certificateholder who has been a bona fide Certificateholder of the related series for at least six months may, on behalf of himself and all others similarly situated, petition any court of competent jurisdiction for the appointment of a successor Trustee of such Trust.

(g) The successor Trustee of a Trust shall give notice of the resignation and removal of the Trustee and appointment of the successor Trustee by mailing written notice of such event by first-class mail, postage prepaid, to the Certificateholders of the related series as their names and addresses appear in the Register. Each notice shall include the name of such successor Trustee and the address of its Corporate Trust Office.

Section 7.10. Acceptance of Appointment by Successor. Every successor Trustee appointed hereunder shall execute and deliver to the Company and to the retiring Trustee with respect to any or all Trusts an instrument accepting such appointment, and thereupon the resignation or removal of the retiring Trustee with respect to such Trusts shall become effective and such successor Trustee, without any further act, deed or conveyance, shall become vested

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with all the rights, powers, trusts and duties of the retiring Trustee; but, on request of the Company or the successor Trustee, such retiring Trustee shall execute and deliver an instrument transferring to such successor Trustee all such rights, powers and trusts of the retiring Trustee and shall duly assign, transfer and deliver to such successor Trustee all Trust Property held by such retiring Trustee in respect of such Trusts hereunder, subject nevertheless to its lien, if any, provided for in Section 7.07. Upon request of any such successor Trustee, the Company, the retiring Trustee and such successor Trustee shall execute and deliver any and all instruments containing such provisions as shall be necessary or desirable to transfer and confirm to, and for more fully and certainly vesting in, such successor Trustee all such rights, powers and trusts.

If a successor Trustee is appointed with respect to one or more (but not all) Trusts, the Company, the predecessor Trustee and each successor Trustee with respect to any Trust shall execute and deliver a supplemental agreement hereto which shall contain such provisions as shall be deemed necessary or desirable to confirm that all the rights, powers, trusts and duties of the predecessor Trustee with respect to the Trusts as to which the predecessor Trustee is not retiring shall continue to be vested in the predecessor Trustee, and shall add to or change any of the provisions of this Basic Agreement and the applicable Trust Supplements as shall be necessary to provide for or facilitate the administration of the Trusts hereunder by more than one Trustee, it being understood that nothing herein or in such supplemental agreement shall constitute such Trustees as co-Trustees of the same Trust and that each such Trustee shall be Trustee of separate Trusts.

No institution shall accept its appointment as a Trustee hereunder unless at the time of such acceptance such institution shall be qualified and eligible under this Article VII.

Section 7.11. Merger, Conversion, Consolidation or Succession to Business. Any corporation into which the Trustee may be merged or converted or with which it may be consolidated, or any corporation resulting from any merger, conversion or consolidation to which the Trustee shall be a party, or any corporation succeeding to all or substantially all of the corporate trust business of the Trustee, shall be the successor of the Trustee hereunder; provided, however, that such corporation shall be otherwise qualified and eligible under this Article VII, without the execution or filing of any paper or any further act on the part of any of the parties hereto. In case any Certificates shall have been executed or authenticated, but not delivered, by the Trustee then in office, any successor by merger, conversion or consolidation to such authenticating Trustee may adopt such execution or authentication and deliver the Certificates so executed or authenticated with the same effect as if such successor Trustee had itself executed or authenticated such Certificates.

Section 7.12. Maintenance of Agencies. (a) With respect to each series of Certificates, there shall at all times be maintained an office or agency in the location set forth in Section 12.04 where Certificates of such series may be presented or surrendered for registration of transfer or for exchange, and for payment thereof, and where notices and demands, to or upon the Trustee in respect of such Certificates or this Agreement may be served; provided, however, that, if it shall be necessary that the Trustee maintain an office or agency in another location with respect to the Certificates of any series (e.g., the Certificates of such series shall be represented by Definitive

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Certificates and shall be listed on a national securities exchange), the Trustee will make all reasonable efforts to establish such an office or agency. Written notice of the location of each such other office or agency and of any change of location thereof shall be given by the Trustee to the Company, the Loan Trustees (in the case of any Loan Trustee, at its address specified in the Note Documents or such other address as may be notified to the Trustee) and the Certificateholders of such series. In the event that no such office or agency shall be maintained or no such notice of location or of change of location shall be given, presentations and demands may be made and notices may be served at the Corporate Trust Office of the Trustee.

(b) There shall at all times be a Registrar and a Paying Agent hereunder with respect to the Certificates of each series. Each such Authorized Agent shall be a bank or trust company, shall be a corporation organized and doing business under the laws of the United States or any state, with a combined capital and surplus of at least $75,000,000, or a corporation having a combined capital and surplus in excess of $5,000,000, the obligations of which are guaranteed by a corporation organized and doing business under the laws of the United States or any state, with a combined capital and surplus of at least $75,000,000, and shall be authorized under such laws to exercise corporate trust powers, subject to supervision by federal or state authorities. The Trustee shall initially be the Paying Agent and, as provided in Section 3.04, Registrar hereunder with respect to the Certificates of each series. Each Registrar shall furnish to the Trustee, at stated intervals of not more than six months, and at such other times as the Trustee may request in writing, a copy of the Register maintained by such Registrar.

(c) Any corporation into which any Authorized Agent may be merged or converted or with which it may be consolidated, or any corporation resulting from any merger, consolidation or conversion to which any Authorized Agent shall be a party, or any corporation succeeding to the corporate trust business of any Authorized Agent, shall be the successor of such Authorized Agent, if such successor corporation is otherwise eligible under this Section 7.12, without the execution or filing of any paper or any further act on the part of the parties hereto or such Authorized Agent or such successor corporation.

(d) Any Authorized Agent may at any time resign by giving written notice of resignation to the Trustee, the Company and the related Loan Trustees. The Company may, and at the request of the Trustee shall, at any time terminate the agency of any Authorized Agent by giving written notice of termination to such Authorized Agent and to the Trustee. Upon the resignation or termination of an Authorized Agent or in case at any time any such Authorized Agent shall cease to be eligible under this Section 7.12 (when, in either case, no other Authorized Agent performing the functions of such Authorized Agent shall have been appointed), the Company shall promptly appoint one or more qualified successor Authorized Agents, reasonably satisfactory to the Trustee, to perform the functions of the Authorized Agent which has resigned or whose agency has been terminated or who shall have ceased to be eligible under this Section 7.12. The Company shall give written notice of any such appointment made by it to the Trustee and the related Loan Trustees; and in each case the Trustee shall mail notice of such appointment to all Certificateholders of the related series as their names and addresses appear on the Register for such series.

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(e) The Company agrees to pay, or cause to be paid, from time to time to each Authorized Agent reasonable compensation for its services and to reimburse it for its reasonable expenses.

Section 7.13. Money for Certificate Payments to be Held in Trust. All moneys deposited with any Paying Agent for the purpose of any payment on Certificates shall be deposited and held in trust for the benefit of the Certificateholders entitled to such payment, subject to the provisions of this Section 7.13. Moneys so deposited and held in trust shall constitute a separate trust fund for the benefit of the Certificateholders with respect to which such money was deposited.

The Trustee may at any time, for the purpose of obtaining the satisfaction and discharge of this Agreement or for any other purpose, direct any Paying Agent to pay to the Trustee all sums held in trust by such Paying Agent, such sums to be held by the Trustee upon the same trusts as those upon which such sums were held by such Paying Agent; and, upon such payment by any Paying Agent to the Trustee, such Paying Agent shall be released from all further liability with respect to such money.

Section 7.14. Registration of Equipment Notes in Trustee’s Name. Subject to Section 12.03 hereof, the Trustee agrees that all Equipment Notes to be purchased by any Trust and Permitted Investments, if any, shall be issued in the name of the Trustee as trustee for the applicable Trust or its nominee and held by the Trustee in trust for the benefit of the Certificateholders of such series, or, if not so held, the Trustee or its nominee shall be reflected as the owner of such Equipment Notes or Permitted Investments, as the case may be, in the register of the issuer of such Equipment Notes or Permitted Investments, as the case may be.

Section 7.15. Representations and Warranties of Trustee. The Trustee hereby represents and warrants that:

(a) the Trustee is a Delaware banking corporation organized and validly existing in good standing under the laws of the State of Delaware;

(b) the Trustee has full power, authority and legal right to execute, deliver and perform this Agreement, any Intercreditor Agreement and the Note Purchase Agreements and has taken all necessary action to authorize the execution, delivery and performance by it of this Agreement, any Intercreditor Agreement and the Note Purchase Agreements;

(c) the execution, delivery and performance by the Trustee of this Agreement, any Intercreditor Agreement and the Note Purchase Agreements (i) will not violate any provision of any United States federal law or the law of the state of the United States where it is located governing the banking and trust powers of the Trustee or any order, writ, judgment, or decree of any court, arbitrator or governmental authority applicable to the Trustee or any of its assets, (ii) will not violate any provision of the articles of association or by-laws of the Trustee, and (iii) will not violate any provision of, or constitute, with or without notice or lapse of time, a default under, or result in the creation or imposition of any lien on any properties included in the Trust Property pursuant to the provisions of any mortgage, indenture, contract, agreement or

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other undertaking to which it is a party, which violation, default or lien could reasonably be expected to have an adverse effect on the Trustee’s performance or ability to perform its duties hereunder or thereunder or on the transactions contemplated herein or therein;

(d) the execution, delivery and performance by the Trustee of this Agreement, any Intercreditor Agreement and the Note Purchase Agreements will not require the authorization, consent, or approval of, the giving of notice to, the filing or registration with, or the taking of any other action in respect of, any governmental authority or agency of the United States or the state of the United States where it is located regulating the banking and corporate trust activities of the Trustee;

(e) this Agreement, any Intercreditor Agreement and the Note Purchase Agreements have been duly executed and delivered by the Trustee and constitute the legal, valid and binding agreements of the Trustee, enforceable against it in accordance with their respective terms; provided, however, that enforceability may be limited by (i) applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the rights of creditors generally and (ii) general principles of equity; and

(f) the statements made by it in a Statement of Eligibility on Form T-1 supplied or to be supplied to the Company in connection with the registration of any Certificates are and will be true and accurate subject to the qualifications set forth therein; and that such statement complies and will comply in all material respects with the requirements of the Trust Indenture Act and the Securities Act.

Section 7.16. Withholding Taxes; Information Reporting. As to the Certificates of any series, the Trustee, as trustee of the related grantor trust created by this Agreement, shall exclude and withhold from each distribution of principal, premium, if any, and interest and other amounts due under this Agreement or under the Certificates of such series any and all withholding taxes applicable thereto as required by law. The Trustee agrees to act as such withholding agent and, in connection therewith, whenever any present or future taxes or similar charges are required to be withheld with respect to any amounts payable in respect of the Certificates of such series, to withhold such amounts and timely pay the same to the appropriate authority in the name of and on behalf of the Certificateholders of such series, that it will file any necessary withholding tax returns or statements when due, and that, as promptly as possible after the payment thereof, it will deliver to each such Certificateholder of such series appropriate documentation showing the payment thereof, together with such additional documentary evidence as such Certificateholders may reasonably request from time to time. The Trustee agrees to file any other information reports as it may be required to file under United States law.

Section 7.17. Trustee’s Liens. The Trustee in its individual capacity agrees that it will, in respect of each Trust created by this Agreement, at its own cost and expense promptly take any action as may be necessary to duly discharge and satisfy in full any mortgage, pledge, lien, charge, encumbrance, security interest or claim (“Trustee’s Liens”) on or with respect to the Trust Property of such Trust which is attributable to the Trustee either (i) in its individual capacity and which is unrelated to the transactions contemplated by this Agreement or the related Note Documents or (ii) as Trustee hereunder or in its individual capacity and which arises out of acts or omissions which are not contemplated by this Agreement.

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Section 7.18. Preferential Collection of Claims. The Trustee shall comply with Section 311(a) of the Trust Indenture Act, excluding any creditor relationship listed in Section 311(b) of the Trust Indenture Act. If the Trustee shall resign or be removed as Trustee, it shall be subject to Section 311(a) of the Trust Indenture Act to the extent provided therein.

ARTICLE VIII

CERTIFICATEHOLDERS’ LISTS AND REPORTS BY TRUSTEE

Section 8.01. The Company to Furnish Trustee with Names and Addresses of Certificateholders. The Company will furnish to the Trustee within 15 days after each Record Date with respect to a Scheduled Payment, and at such other times as the Trustee may request in writing within 30 days after receipt by the Company of any such request, a list, in such form as the Trustee may reasonably require, of all information in the possession or control of the Company as to the names and addresses of the Certificateholders of each series, in each case as of a date not more than 15 days prior to the time such list is furnished; provided, however, that so long as the Trustee is the sole Registrar for such series, no such list need be furnished; and provided further, however, that no such list need be furnished for so long as a copy of the Register is being furnished to the Trustee pursuant to Section 7.12.

Section 8.02. Preservation of Information; Communications to Certificateholders. The Trustee shall preserve, in as current a form as is reasonably practicable, the names and addresses of Certificateholders of each series contained in the most recent list furnished to the Trustee as provided in Section 7.12 or Section 8.01, as the case may be, and the names and addresses of Certificateholders of each series received by the Trustee in its capacity as Registrar, if so acting. The Trustee may destroy any list furnished to it as provided in Section 7.12 or Section 8.01, as the case may be, upon receipt of a new list so furnished.

Section 8.03. Reports by Trustee. Within 60 days after May 15 of each year commencing with the first full year following the issuance of any series of Certificates, the Trustee shall transmit to the Certificateholders of such series, as provided in Section 313(c) of the Trust Indenture Act, a brief report dated as of such May 15, if required by Section 313(a) of the Trust Indenture Act.

Section 8.04. Reports by the Company. The Company shall:

(a) file with the Trustee, within 30 days after the Company is required to file the same with the SEC, copies of the annual reports and of the information, documents and other reports (or copies of such portions of any of the foregoing as the SEC may from time to time by rules and regulations prescribe) which the Company is required to file with the SEC pursuant to section 13 or section 15(d) of the Securities Exchange Act of 1934, as amended; or, if the Company is not required to file information, documents or reports pursuant to either of such sections, then to file with the Trustee and the SEC, in accordance with rules and regulations

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prescribed by the SEC, such of the supplementary and periodic information, documents and reports which may be required pursuant to section 13 of the Securities Exchange Act of 1934, as amended, in respect of a security listed and registered on a national securities exchange as may be prescribed in such rules and regulations;

(b) file with the Trustee and the SEC, in accordance with the rules and regulations prescribed by the SEC, such additional information, documents and reports with respect to compliance by the Company with the conditions and covenants of the Company provided for in this Agreement, as may be required by such rules and regulations, including, in the case of annual reports, if required by such rules and regulations, certificates or opinions of independent public accountants, conforming to the requirements of Section 1.02;

(c) transmit to all Certificateholders, in the manner and to the extent provided in Section 313(c) of the Trust Indenture Act such summaries of any information, documents and reports required to be filed by the Company pursuant to subsections (a) and (b) of this Section 8.04 as may be required by rules and regulations prescribed by the SEC; and

(d) furnish to the Trustee, not less often than annually, a brief certificate from the principal executive officer, principal financial officer or principal accounting officer as to his knowledge of the Company’s compliance with all conditions and covenants under this Agreement (it being understood that for purposes of this paragraph (d), such compliance shall be determined without regard to any period of grace or requirement of notice provided under this Agreement).

ARTICLE IX

SUPPLEMENTAL AGREEMENTS

Section 9.01. Supplemental Agreements Without Consent of Certificateholders. Without the consent of the Certificateholders, the Company may (but will not be required to), and the Trustee (subject to Section 9.03) shall, at the Company’s request, at any time and from time to time, enter into one or more agreements supplemental hereto or, if applicable, to an Intercreditor Agreement, a Note Purchase Agreement or a Liquidity Facility, in form satisfactory to the Trustee, for any of the following purposes:

(1) to provide for the formation of a Trust, the issuance of a series of Certificates and other matters contemplated by Section 2.01(b); or

(2) to evidence the succession of another corporation to the Company and the assumption by any such successor of the covenants of the Company herein contained or of the Company’s obligations under any Intercreditor Agreement, any Note Purchase Agreement or any Liquidity Facility; or

(3) to add to the covenants of the Company for the benefit of the Certificateholders of any series, or to surrender any right or power conferred upon the Company in this Agreement, any Note Purchase Agreement, any Intercreditor Agreement or any Liquidity Facility; or

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(4) to correct or supplement any provision in this Agreement, any Intercreditor Agreement, any Note Purchase Agreement or any Liquidity Facility which may be defective or inconsistent with any other provision herein or therein or to cure any ambiguity or to modify any other provision with respect to matters or questions arising under this Agreement, any Intercreditor Agreement, any Note Purchase Agreement or any Liquidity Facility, provided, however, that any such action shall not materially adversely affect the interests of the Certificateholders of any series; to correct any mistake in this Agreement, any Intercreditor Agreement, any Note Purchase Agreement or any Liquidity Facility; or, as provided in any Intercreditor Agreement, to give effect to or provide for a Replacement Liquidity Facility (as defined in such Intercreditor Agreement); or

(5) to comply with any requirement of the SEC, any applicable law, rules or regulations of any exchange or quotation system on which the Certificates of any series are listed or of any regulatory body; or

(6) to modify, eliminate or add to the provisions of this Agreement, any Intercreditor Agreement, any Note Purchase Agreement or any Liquidity Facility to such extent as shall be necessary to continue the qualification of this Agreement, any Intercreditor Agreement or any Liquidity Facility (including any supplemental agreement) under the Trust Indenture Act or under any similar Federal statute hereafter enacted, and to add to this Agreement, any Intercreditor Agreement, any Note Purchase Agreement or any Liquidity Facility such other provisions as may be expressly permitted by the Trust Indenture Act, excluding, however, the provisions referred to in Section 316(a)(2) of the Trust Indenture Act as in effect at the date as of which this Basic Agreement was executed or any corresponding provision in any similar Federal statute hereafter enacted; or

(7) to evidence and provide for the acceptance of appointment under this Agreement, any Intercreditor Agreement, any Note Purchase Agreement or any Liquidity Facility by a successor Trustee with respect to one or more Trusts and to add to or change any of the provisions of this Agreement, any Intercreditor Agreement, any Note Purchase Agreement or any Liquidity Facility as shall be necessary to provide for or facilitate the administration of the Trust, pursuant to the requirements of Section 7.10; or

(8) to provide the information required under Section 7.12 and Section 12.04 as to the Trustee; or

(9) to make any other amendments or modifications hereto, provided, however, that such amendments or modifications shall apply to Certificates of any series to be thereafter issued;

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provided, however, that no such supplemental agreement shall adversely affect the status of any Trust as a grantor trust under Subpart E, Part I of Subchapter J of Chapter 1 of Subtitle A of the Internal Revenue Code of 1986, as amended, for U.S. federal income tax purposes.

Section 9.02. Supplemental Agreements with Consent of Certificateholders. With respect to each separate Trust and the series of Certificates relating thereto, with the consent of the Certificateholders holding Certificates of such series (including consents obtained in connection with a tender offer or exchange offer for the Certificates) evidencing Fractional Undivided Interests aggregating not less than a majority in interest in such Trust, by Direction of said Certificateholders delivered to the Company and the Trustee, the Company may, but shall not be obligated to, and the Trustee (subject to Section 9.03) shall, enter into an agreement or agreements supplemental hereto for the purpose of adding any provisions to or changing in any manner or eliminating any of the provisions of this Agreement, any Intercreditor Agreement, any Note Purchase Agreement or any Liquidity Facility to the extent applicable to such Certificateholders or of modifying in any manner the rights and obligations of such Certificateholders under this Agreement, any Intercreditor Agreement, any Note Purchase Agreement or any Liquidity Facility; provided, however, that no such agreement shall, without the consent of the Certificateholder of each Outstanding Certificate affected thereby:

(1) reduce in any manner the amount of, or delay the timing of, any receipt by the Trustee of payments on the Equipment Notes held in such Trust or distributions that are required to be made herein on any Certificate of such series, or change any date of payment on any Certificate of such series, or change the place of payment where, or the coin or currency in which, any Certificate of such series is payable, or impair the right to institute suit for the enforcement of any such payment or distribution on or after the Regular Distribution Date or Special Distribution Date applicable thereto; or

(2) permit the disposition of any Equipment Note included in the Trust Property of such Trust except as permitted by this Agreement, any Trust Supplement or the Intercreditor Agreement, or otherwise deprive such Certificateholder of the benefit of the ownership of the Equipment Notes in such Trust; or

(3) alter the priority of distributions specified in the Intercreditor Agreement in a manner materially adverse to the interests of the Certificateholders of such series; or

(4) reduce the specified percentage of the aggregate Fractional Undivided Interests of such Trust that is required for any such supplemental agreement, or reduce such specified percentage required for any waiver (of compliance with certain provisions of this Agreement or certain defaults hereunder and their consequences) provided for in this Agreement; or

(5) modify any of the provisions of this Section 9.02 or Section 6.05, except to increase any such percentage or to provide that certain other provisions of this Agreement cannot be modified or waived without the consent of the Certificateholder of each Certificate of such series affected thereby; or

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(6) adversely affect the status of any Trust as a grantor trust under Subpart E, Part I of Subchapter J of Chapter 1 of Subtitle A of the Internal Revenue Code of 1986, as amended, for U.S. federal income tax purposes; or

(7) If a Parent Guarantee is issued by the Parent Guarantor guaranteeing the Equipment Notes held in such Trust, modify such Parent Guarantee in a manner materially adverse to the interests of the Certificateholders of such series.

It shall not be necessary for any Direction of such Certificateholders under this Section 9.02 to approve the particular form of any proposed supplemental agreement, but it shall be sufficient if such Direction shall approve the substance thereof.

Section 9.03. Documents Affecting Immunity or Indemnity. If in the opinion of the Trustee any document required to be executed by it pursuant to the terms of Section 9.01 or 9.02 affects any interest, right, duty, immunity or indemnity in favor of the Trustee under this Basic Agreement or any Trust Supplement, the Trustee may in its discretion decline to execute such document.

Section 9.04. Execution of Supplemental Agreements. In executing, or accepting the additional trusts created by, any supplemental agreement permitted by this Article or the modifications thereby of the trusts created by this Agreement, the Trustee shall be entitled to receive, and shall be fully protected in relying upon, an Opinion of Counsel stating that the execution of such supplemental agreement is authorized or permitted by this Agreement.

Section 9.05. Effect of Supplemental Agreements. Upon the execution of any agreement supplemental to this Agreement under this Article, this Basic Agreement shall be modified in accordance therewith, and such supplemental agreement shall form a part of this Basic Agreement for all purposes; and every Certificateholder of each series theretofore or thereafter authenticated and delivered hereunder shall be bound thereby to the extent applicable to such series.

Section 9.06. Conformity with Trust Indenture Act. Every supplemental agreement executed pursuant to this Article shall conform to the requirements of the Trust Indenture Act as then in effect.

Section 9.07. Reference in Certificates to Supplemental Agreements. Certificates of each series authenticated and delivered after the execution of any supplemental agreement applicable to such series pursuant to this Article may bear a notation in form approved by the Trustee as to any matter provided for in such supplemental agreement; and, in such case, suitable notation may be made upon Outstanding Certificates of such series after proper presentation and demand.

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ARTICLE X

AMENDMENTS TO INDENTURE AND NOTE DOCUMENTS

Section 10.01. Amendments and Supplements to Indenture and other Note Documents. In the event that the Trustee, as holder (or beneficial owner through the Subordination Agent) of any Equipment Notes in trust for the benefit of the Certificateholders of any series or as Controlling Party under an Intercreditor Agreement, receives (directly or indirectly through the Subordination Agent) a request for a consent to any amendment, modification, waiver or supplement under any Indenture, other Note Document or any other related document, the Trustee shall forthwith send a notice of such proposed amendment, modification, waiver or supplement to each Certificateholder of such series registered on the Register as of the date of such notice. The Trustee shall request from the Certificateholders of such series a Direction as to (a) whether or not to take or refrain from taking (or direct the Subordination Agent to take or refrain from taking) any action which a holder of such Equipment Note or a Controlling Party has the option to direct, (b) whether or not to give or execute (or direct the Subordination Agent to give or execute) any waivers, consents, amendments, modifications or supplements as a holder of such Equipment Note or as Controlling Party and (c) how to vote (or direct the Subordination Agent to vote) any Equipment Note if a vote has been called for with respect thereto. Provided such a request for Certificateholder Direction shall have been made and subject to the provisions of Section 1.04(c) hereof, in directing any action or casting any vote or giving any consent as the holder of any Equipment Note (or in directing the Subordination Agent in any of the foregoing), (i) other than as Controlling Party, the Trustee shall vote for or give consent to any such action with respect to such Equipment Note in the same proportion as that of (A) the aggregate face amounts of all Certificates actually voted in favor of or for giving consent to such action by such Direction of Certificateholders to (B) the aggregate face amount of all Outstanding Certificates and (ii) as Controlling Party, the Trustee shall vote as directed in such Certificateholder Direction by the Certificateholders of such series evidencing a Fractional Undivided Interest aggregating not less than a majority in interest in the Trust. For purposes of the immediately preceding sentence, a Certificate shall have been “actually voted” if the Holder of such Certificate has delivered to the Trustee an instrument evidencing such Holder’s consent to such Direction prior to one Business Day before the Trustee directs such action or casts such vote or gives such consent. Notwithstanding the foregoing, but subject to Section 6.04 and any Intercreditor Agreement, the Trustee may, with respect to the Certificates of any series, in its own discretion and at its own direction, consent and notify the relevant Loan Trustee of such consent (or direct the Subordination Agent to consent and notify the Loan Trustee of such consent) to any amendment, modification, waiver or supplement under any related Indenture or any other related Note Document if an Event of Default hereunder shall have occurred and be continuing or if such amendment, modification, waiver or supplement will not materially adversely affect the interests of the Certificateholders of such series.

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ARTICLE XI

TERMINATION OF TRUSTS

Section 11.01. Termination of the Trusts. In respect of each Trust created by the Basic Agreement as supplemented by a related Trust Supplement, the respective obligations and responsibilities of the Company and the Trustee with respect to such Trust shall terminate upon the distribution to all Holders of Certificates of the series of such Trust and the Trustee of all amounts required to be distributed to them pursuant to this Agreement and the disposition of all property held as part of the Trust Property of such Trust; provided, however, that in no event shall such Trust continue beyond one hundred ten (110) years following the date of the execution of the Trust Supplement with respect to such Trust (or such other final expiration date as may be specified in such Trust Supplement).

Notice of any termination of a Trust, specifying the applicable Regular Distribution Date (or applicable Special Distribution Date, as the case may be) upon which the Certificateholders of any series may surrender their Certificates to the Trustee for payment of the final distribution and cancellation, shall be mailed promptly by the Trustee to Certificateholders of such series not earlier than the minimum number of days and not later than the maximum number of days specified therefor in the related Trust Supplement preceding such final distribution specifying (A) the Regular Distribution Date (or Special Distribution Date, as the case may be) upon which the proposed final payment of the Certificates of such series will be made upon presentation and surrender of Certificates of such series at the office or agency of the Trustee therein specified, (B) the amount of any such proposed final payment, and (C) that the Record Date otherwise applicable to such Regular Distribution Date (or Special Distribution Date, as the case may be) is not applicable, payments being made only upon presentation and surrender of the Certificates of such series at the office or agency of the Trustee therein specified. The Trustee shall give such notice to the Registrar at the time such notice is given to Certificateholders of such series. Upon presentation and surrender of the Certificates of such series in accordance with such notice, the Trustee shall cause to be distributed to Certificateholders of such series amounts distributable on such Regular Distribution Date (or Special Distribution Date, as the case may be) pursuant to Section 4.02.

In the event that all of the Certificateholders of such series shall not surrender their Certificates for cancellation within six months after the date specified in the above-mentioned written notice, the Trustee shall give a second written notice to the remaining Certificateholders of such series to surrender their Certificates for cancellation and receive the final distribution with respect thereto. No additional interest shall accrue on the Certificates of such series after any Regular Distribution Date (or Special Distribution Date, as the case may be) of such series, as specified in the first written notice. In the event that any money held by the Trustee for the payment of distributions on the Certificates of such series shall remain unclaimed for two years (or such lesser time as the Trustee shall be satisfied, after 60 days’ notice from the Company, is one month prior to the escheat period provided under applicable law) after the final distribution date with respect thereto, the Trustee shall pay to each Loan Trustee the appropriate amount of money relating to such Loan Trustee and shall give written notice thereof to the Company.

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ARTICLE XII

MISCELLANEOUS PROVISIONS

Section 12.01. Limitation on Rights of Certificateholders. The death or incapacity of any Certificateholder of any series shall not operate to terminate this Agreement or the related Trust, nor entitle such Certificateholder’s legal representatives or heirs to claim an accounting or to take any action or commence any proceeding in any court for a partition or winding up of the Trust, nor otherwise affect the rights, obligations, and liabilities of the parties hereto or any of them.

Section 12.02. Liabilities of Certificateholders. Neither the existence of the Trust nor any provision in this Agreement is intended to or shall limit the liability the Certificateholders would otherwise incur if the Certificateholders owned Trust Property as co-owners, or incurred any obligations of the Trust, directly rather than through the Trust.

Section 12.03. Registration of Equipment Notes in Name of Subordination Agent. If a Trust is party to an Intercreditor Agreement, the Trustee agrees that all Equipment Notes to be purchased by such Trust shall be issued in the name of the Subordination Agent under such Intercreditor Agreement or its nominee and held by such Subordination Agent in trust for the benefit of the Certificateholders, or, if not so held, such Subordination Agent or its nominee shall be reflected as the owner of such Equipment Notes in the register of the issuer of such Equipment Notes.

Section 12.04. Notices. (a) Unless otherwise specifically provided herein or in the applicable Trust Supplement with respect to any Trust, all notices required under the terms and provisions of this Basic Agreement or such Trust Supplement with respect to such Trust shall be in English and in writing, and any such notice may be given by United States mail, courier service or telecopy, and any such notice shall be effective when delivered or received or, if mailed, three days after deposit in the United States mail with proper postage for ordinary mail prepaid,


if to the Company:

	United Air Lines, Inc.
	▇▇ ▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇
	▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇
	Attention:	▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇, Vice President & Treasurer
	Email:	▇▇▇▇▇▇▇.▇▇▇▇▇▇▇▇▇@▇▇▇▇▇▇.▇▇▇,
	Telephone/Facsimile: ▇▇▇-▇▇▇-▇▇▇▇, and

	Attention:	▇▇▇▇ ▇. ▇▇▇▇▇▇▇, Senior Vice President, General Counsel and Secretary
	Email:	▇▇▇▇.▇▇▇▇▇▇▇@▇▇▇▇▇▇.▇▇▇
	Telephone/Facsimile: ▇▇▇-▇▇▇-▇▇▇▇

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with a copy to

	▇▇▇▇▇▇ Price ▇▇▇▇▇▇▇ & Kammholz, PC
	▇▇▇ ▇. ▇▇▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇
	▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇
	Attention:	▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇, Shareholder
	Facsimile:	(▇▇▇) ▇▇▇-▇▇▇▇
	Telephone:	(▇▇▇) ▇▇▇-▇▇▇▇

if to the Trustee:

	Wilmington Trust Company
	▇▇▇▇▇▇ Square North
	▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇
	▇▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇-▇▇▇▇
	Attention:	Corporate Trust Department
	Facsimile:	(▇▇▇) ▇▇▇-▇▇▇▇
	Telephone:	(▇▇▇) ▇▇▇-▇▇▇▇

(b) The Company or the Trustee, by notice to the other, may designate additional or different addresses for subsequent notices or communications.

(c) Any notice or communication to Certificateholders of any series shall be mailed by first-class mail to the addresses for Certificateholders of such series shown on the Register kept by the Registrar and to addresses filed with the Trustee for Certificate Owners of such series. Failure so to mail a notice or communication or any defect in such notice or communication shall not affect its sufficiency with respect to other Certificateholders or Certificate Owners of such series.

(d) If a notice or communication is mailed in the manner provided above within the time prescribed, it is conclusively presumed to have been duly given, whether or not the addressee receives it.

(e) If the Company mails a notice or communication to the Certificateholders of such series, it shall mail a copy to the Trustee and to each Paying Agent for such series at the same time.

(f) Notwithstanding the foregoing, all communications or notices to the Trustee shall be deemed to be given only when received by a Responsible Officer of the Trustee.

(g) The Trustee shall promptly furnish the Company with a copy of any demand, notice or written communication received by the Trustee hereunder from any Certificateholder or Loan Trustee.

Section 12.05. Governing Law. THIS BASIC AGREEMENT HAS BEEN DELIVERED IN THE STATE OF NEW YORK AND, TOGETHER WITH ALL TRUST

[Pass Through Trust Agreement]

SUPPLEMENTS AND CERTIFICATES, SHALL BE CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE PARTIES HEREUNDER SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS.

Section 12.06. Severability of Provisions. If any one or more of the covenants, agreements, provisions or terms of this Agreement shall be for any reason whatsoever held invalid, then such covenants, agreements, provisions, or terms shall be deemed severable from the remaining covenants, agreements, provisions or terms of this Agreement and shall in no way affect the validity or enforceability of the other provisions of this Agreement or the related Trust, or of the Certificates of such series or the rights of the Certificateholders thereof.

Section 12.07. Trust Indenture Act Controls. This Agreement is subject to the provisions of the Trust Indenture Act and shall, to the extent applicable, be governed by such provisions. If any provision of this Agreement limits, qualifies or conflicts with another provision which is required to be included in this Agreement by the Trust Indenture Act, the required provision shall control.

Section 12.08. Effect of Headings and Table of Contents. The Article and Section headings herein and the Table of Contents are for convenience only and shall not affect the construction hereof.

Section 12.09. Successors and Assigns. All covenants, agreements, representations and warranties in this Agreement by the Trustee and the Company shall bind and, to the extent permitted hereby, shall inure to the benefit of and be enforceable by their respective successors and assigns, whether so expressed or not.

Section 12.10. Benefits of Agreement. Nothing in this Agreement or in the Certificates of any series, express or implied, shall give to any Person, other than the parties hereto and their successors hereunder, and the Certificateholders of each series, any benefit or any legal or equitable right, remedy or claim under this Agreement.

Section 12.11. Legal Holidays. In any case where any Regular Distribution Date or Special Distribution Date relating to any Certificate of any series shall not be a Business Day with respect to such series, then (notwithstanding any other provision of this Agreement) payment need not be made on such date, but may be made on the next succeeding Business Day with the same force and effect as if made on such Regular Distribution Date or Special Distribution Date, and no interest shall accrue during the intervening period.

Section 12.12. Counterparts. For the purpose of facilitating the execution of this Agreement and for other purposes, this Agreement may be executed simultaneously in any number of counterparts, each of which counterparts shall be deemed to be an original, and all of which counterparts shall constitute but one and the same instrument.

Section 12.13. Communication by Certificateholders with other Certificateholders. Certificateholders of any series may communicate with other Certificateholders of such series

[Pass Through Trust Agreement]

with respect to their rights under this Basic Agreement, the related Trust Supplement or the Certificates of such series pursuant to Section 312(b) of the Trust Indenture Act. The Company, the Trustee and any and all other persons benefited by this Agreement shall have the protection afforded by Section 312(c) of the Trust Indenture Act.

Section 12.14. Intention of Parties. The parties hereto intend that each Trust be classified for U.S. federal income tax purposes as a grantor trust under Subpart E, Part I of Subchapter J of the Internal Revenue Code of 1986, as amended, and not as a trust or association taxable as a corporation or as a partnership. The powers granted and obligations undertaken pursuant to this Agreement shall be so construed so as to further such intent.

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[Pass Through Trust Agreement]

IN WITNESS WHEREOF, the parties have caused this Agreement to be duly executed by their respective officers thereunto duly authorized as of the day and year first written above.


UNITED AIR LINES, INC.

By:		/s/ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇
Name:		▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇
Title:		Vice President and Treasurer

WILMINGTON TRUST COMPANY, as Trustee

By:		/s/ W. ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇
Name:		W. ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇
Title:		Vice President

PASS THROUGH TRUST AGREEMENT dated as of June 26, 2007 between UNITED AIR LINES, INC. and WILMINGTON TRUST COMPANY, as Trustee

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