Exhibit 10.14
                                                        CONFIDENTIAL TREATMENT
                                                REQUESTED PURSUANT TO RULE 406
        CERTAIN PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED PURSUANT TO A
    REQUEST FOR CONFIDENTIAL TREATMENT UNDER RULE 406 OF THE SECURITIES ACT
       OF 1933. THE OMITTED MATERIALS HAVE BEEN FILED SEPARATELY WITH THE
                       SECURITIES AND EXCHANGE COMMISSION.
                              AMENDED AND RESTATED
                           LETTER AGREEMENT GCT-026/98
This Amended and Restated Letter of Agreement GCT-026/98 ("Agreement") dated
April 19, 2002, is an agreement between Republic Airways Holdings, Inc.
("Buyer") with its principal place of business at ▇▇▇▇ ▇. ▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇,
▇▇▇▇▇▇▇▇▇▇▇▇, ▇▇▇▇▇▇▇ ▇▇▇▇▇, ▇▇▇▇▇▇ ▇▇▇▇▇▇, and Embraer - Empresa Brasileira de
Aeronautica S.A. ("Embraer"), with its principal place of business at Sao ▇▇▇▇
dos ▇▇▇▇▇▇, Sao Paulo, Brazil, relating to the Amended and Restated Purchase
Agreement GCT-025/98 dated April __, 2002 (the "Purchase Agreement") for the
purchase by Buyer of up to thirty-seven (37) new EMB-145 LR aircraft (the
"Aircraft").
This Agreement constitutes an amendment and modification of the Purchase
Agreement, and it sets forth additional agreements of the Parties with respect
to the matters set forth in the Purchase Agreement. All terms defined in the
Purchase Agreement shall have the same meaning when used herein, and in case of
any conflict between this Agreement and the Purchase Agreement, this Agreement
shall govern.
Solitair Corp. ("Solitair") has assigned to Buyer all of Solitair's rights and
obligations under the Purchase Agreement DCT-025/98 between Embraer and Solitair
(as amended before the date of the Purchase Agreement, the "Original Purchase
Agreement") and Letter Agreement GCT-026/98 dated as of June 17, 1998 between
Embraer and Solitair (as amended before the date of this Agreement, the
"Original Letter Agreement") with respect to the sale of certain unexercised
option aircraft, and in connection with such assignment, Solitair has also
assigned to Buyer its remaining rights with respect to the aircraft delivered
and to be delivered under the Original Purchase Agreement.
Buyer and Embraer now desire to amend and restate certain agreements relating to
such Aircraft, as previously provided in the Original Letter Agreement.
At the time this Agreement becomes effective, neither Buyer nor Embraer shall
have any rights against or obligations to the other pursuant to the Original
Letter Agreement.
NOW, THEREFORE, for good and valuable consideration, receipt of which is hereby
acknowledged, Embraer and Buyer agree as follows:
                                                                    Page 1 of 10
1.       BRAZILIAN EXPORT SUPPORT
         A.       Securing Availability of [*] Benefits
                  [*] shall secure availability of Brazilian Export Financing
                  Program [*] on behalf of and for the benefit of Buyer for the
                  Aircraft by obtaining [*] for those Aircraft.
         B.       Amount of [*] Benefits
                  The [*] Benefits [*] of [*] of [*] which may be charged by a
                  permitted financier of the Aircraft.
                  To the extent that the [*] Benefits are reduced below the
                  level referred to above, withdrawn or canceled, [*] , either:
                  B.1.     when and if permitted by the then existing
                           governmental rules and regulations, [*] or
                  B.2.     [*]
         C.       [*]
2.       SPARE PARTS CREDITS
         Embraer will provide Buyer a spare parts (except engines, engine
         related parts and APU) and ground support equipment credit of [*] .
         This spare parts credit shall be made available to Buyer upon [*] If
         for any reason the Purchase Agreement is partially terminated in
         relation to any Aircraft, then Buyer shall pay [*] per each applicable
         terminated EMB-145 Aircraft and/or [*] per each EMB-140 Aircraft for
         which such Spare Parts Credit for any reason has already been provided
         to Buyer. Each Spare Part Credit shall only be made available to Buyer
         in the event there is [*] . If any such credit is not so made available
         to Buyer because [*] , such credit shall be made available [*] . Any
         portion of such credit which remains unused [*] shall be deemed to have
         been waived by Buyer, and no further compensation shall be due [*] for
         such Spare Parts Credit. Such Spare Parts Credit shall be applied
         against [*].
3.       ADDITIONAL SPARES
         Notwithstanding the value of Spares stated in Article 3.A.2 of the
         Purchase Agreement, the Buyer may acquire Spares in excess of such
         stated value, subject to availability of such additional Spares, from
         Embraer ("Additional Spares"). However, such Additional Spares [*] .
---------
* Confidential
                                                                    Page 2 of 10
4.       FINANCING
         A.       In the event Buyer elects to assign its rights to an Aircraft
                  to a financing institution as provided for in Article 16.a of
                  the Purchase Agreement, it shall provide Embraer with written
                  notice of the name, address, telephone number and contact
                  person of such financing institution within [*] prior to
                  intended date of the assignment; provided that Buyer shall
                  make reasonable efforts to provide earlier notice. Buyer shall
                  also timely provide Embraer with any other information Embraer
                  may reasonably request in regard to such financing
                  institution. Embraer shall inform Buyer whether such financing
                  institution has been approved by Embraer to the extent
                  required pursuant to Article 16 of the Purchase Agreement
                  within [*] after its receipt of such notice.
         B.       Notwithstanding anything to the contrary in Article 3 or 24 of
                  the Purchase Agreement, the Basic Prices for the Aircraft
                  shall [*] if Buyer does not [*] The Basic Prices for the
                  Aircraft shall also [*]
         C.       For each Aircraft (excluding Aircraft for which [*] issued),
                  Embraer shall offer a [*] Such [*] will be based on the
                  determination of [*] using [*] The Buyer will use commercially
                  reasonable efforts to provide Embraer with reasonable notice
                  of [*] provided, however, any failure to provide such notice
                  shall [*] in accordance with the terms of this Agreement.
                  C.1      The obligation of Embraer to grant [*] contingent
                           upon Buyer's [*]
                  C.2      If Buyer has made the determination set forth above,
                           Embraer shall then [*] provided however, that Buyer
                           shall make reasonable efforts to minimize [*]
                  C.3      If, on a case by case basis, Buyer is unable to use
                           an [*] in the financing of an Aircraft after making
                           reasonable efforts to do so, and the Buyer believes
                           in good faith that such failure is due to [*] Buyer
                           may request that Embraer [*] In such situation,
                           Embraer shall [*]
                  C.4      The terms of the [*] shall apply to [*] pursuant to
                           this Section 4.C.
         Embraer shall make [*] to assist Buyer's efforts to [*] Embraer shall
         not be obliged to assist Buyer in efforts to [*]
         For the avoidance of doubt, Embraer shall not be deemed to have [*]
5.       AIRCRAFT ESCALATION PRICE
         A.       The Basic Prices are subject to Embraer's standard escalation
                  formula contained in Attachment "D" (the "Escalation Formula")
                  to the Purchase Agreement.
---------
* Confidential
                                                                    Page 3 of 10
         B.       The Escalation Formula applied to each Aircraft [*] for each
                  of such Aircraft. However, in the event that the delivery date
                  provided for any of such Aircraft is delayed for any reason
                  not attributable to Embraer [*] and the Basic Price of the
                  such relevant Aircraft shall be [*] in accordance with the
                  Escalation Formula.
         C.       The calculation of [*] shall be made for the [*] applicable
                  for each relevant Aircraft [*] , and the result so obtained
                  [*] shall be [*] .
         D.       The Purchase Price for such Aircraft shall be determined as
                  follows:
                  (i)      If [*] , the Aircraft Purchase Price shall be equal
                           to [*] , or:
                  (ii)     If [*] , but [*] , the [*] shall be [*] and the
                           applicable Aircraft Purchase Price shall be equal to
                           [*] , or:
                  (iii)    If [*] , the applicable Aircraft Purchase Price shall
                           be equal to [*] , and the result so obtained shall be
                           [*] .
         E.       The conditions described above shall only be applicable in the
                  event [*] . In the event, in any of the situations described
                  above, [*] , the applicable Aircraft Purchase Price will be
                  equal to the applicable Aircraft Basic Price [*] ."
6.       SPARE PARTS [*] Embraer shall at all times provide Buyer [*] its
         published base spare parts catalogue price list which includes only
         Embraer-made parts. This [*] shall be applicable for the [*] . . Such
         [*] shall be applicable for spare parts purchase orders to be placed at
         Embraer after the signature of this Agreement.
7.       ADDITIONAL AIRCRAFT GUARANTEES
         Embraer shall provide an aircraft performance guarantee in accordance
         with the terms and conditions specified in Schedule "3-A" to this
         Agreement.
         Embraer shall provide a direct maintenance cost guarantee and scheduled
         dispatch reliability guarantee in accordance with the terms and
         conditions specified in Schedules "4" and "5", respectively. These
         guarantees shall apply to the Aircraft and the forty-eight (48)
         EMB-145LR and EMB-135KL aircraft previously delivered under the
         Original Purchase Agreement, and shall also apply to the five (5)
         additional EMB-135KL aircraft currently scheduled for delivery to
         Chautauqua by Solitair under the Original Purchase Agreement.
8.       CONVERSION
         A.       DECISION TO CONVERT
---------
* Confidential
                                                                    Page 4 of 10
                  Buyer may at Buyer's option, elect to convert each of the
                  Option Aircraft to EMB-140 Aircraft (as defined below) in
                  groups of [*] Aircraft ("Conversion Group"), provided that
                  Buyer informs Embraer by means of a written notice ("Election
                  Notice") no later than the date which Buyer confirms the
                  exercise of its option to purchase such Option Aircraft,
                  according to Article 24 of the Purchase Agreement, of its
                  intention to exercise such conversion right. Buyer may elect
                  to convert [*] Aircraft within each Conversion Group to
                  EMB-140 Aircraft.
                  EMB-140 Aircraft - shall mean the EMB-145, Model EMB-135 KL
                  version Aircraft, or, where there is more than one of such
                  Aircraft, each of such Aircraft, manufactured by Embraer, for
                  sale to Buyer pursuant to the Purchase Agreement, according to
                  Technical Description TD-140/002, dated April 2000, the
                  Aircraft Specific Configuration, Finishing and Registration
                  Marks described in Schedule "6" to this Letter Agreement, as
                  may be amended from time to time by Buyer at its expense as
                  specified in Article 11 of the Purchase Agreement. The
                  Aircraft is composed entirely of vendor parts and parts
                  manufactured by Embraer and Embraer subcontractors, and the
                  parts manufactured by Embraer and Embraer subcontractors shall
                  have Embraer part numbers.
                  Any initial deposit or progress payment paid by Buyer pursuant
                  to Articles 4.a or 24.d of the Purchase Agreement with respect
                  to any Aircraft which later becomes an EMB-140 Aircraft, shall
                  be held and applied to the Purchase Price of the relevant
                  EMB-140 Aircraft in the same manner as to be held and applied
                  to the Aircraft so converted.
         B.       APPLICATION OF PURCHASE AGREEMENT TO EMB-140 AIRCRAFT:
                  Except as provided in this paragraph "b", all terms and
                  conditions applicable for the Aircraft shall also be
                  applicable MUTATIS MUTANDI for the EMB-140 Aircraft.
                  B.1.     The unit Basic Price of the EMB-140 Aircraft shall be
                           [*] in [*] economic conditions in the configuration,
                           specification and installations specified in Schedule
                           "6", provided that there will be [*] as described in
                           Section 4.c of this Agreement and any other [*]
                           agreed to in writing between Embraer and Buyer. In
                           the event Buyer enters into a [*] for any EMB-140
                           Aircraft, the EMB-140 Aircraft Basic Price shall be
                           [*]
                  B.2.     Schedule "3-B" shall apply to the EMB-140 Aircraft in
                           lieu of Schedule "3-A".
9.       PROGRESS PAYMENTS
9.1      FIRM AIRCRAFT
         A.       The progress payments for the Firm Aircraft pursuant to
                  Articles 4.a.2, 4.a.3
---------
* Confidential
                                                                    Page 5 of 10
                  and 4.a.4 of the Purchase Agreement shall be reduced from [*]
                  to [*] , subject to Buyer's payment of interest pursuant to
                  item B below.
         B.       In order to compensate Embraer for this reduction in the
                  progress payments, interest shall accrue at a rate of [*] on
                  the amount that each such progress payment has been reduced
                  [*] , from the date such progress payment is due until the
                  Actual Delivery Date for each Aircraft.
9.2      OPTION AIRCRAFT
         A.       Notwithstanding anything to the contrary in the Purchase
                  Agreement, Buyer shall not be obligated to make any progress
                  payments for an Option Aircraft until Buyer has confirmed its
                  purchase of such Option Aircraft.
         B.       The progress payments for the Option Aircraft pursuant to
                  Articles 24.d.2, 24.d.3 and 24.d.4 of the Purchase Agreement
                  shall be reduced from [*] to [*] , subject to Buyer's payment
                  of interest pursuant to item C below.
         C.       In order to compensate Embraer for this reduction in the
                  progress payments, interest shall accrue at a rate of [*] on
                  the amount that each such progress payment has been reduced
                  [*] , from the date such progress payment is due until the
                  Actual Delivery Date for each Aircraft.
         D.       Items A and B shall not apply to Option Aircraft [*]
9.3      GENERAL TERMS FOR INTEREST ON PROGRESS PAYMENTS
         A.       Amounts owed by Buyer pursuant to this Article 9 shall not
                  constitute part of the Aircraft Purchase Price and shall be
                  paid by Buyer directly to Embraer upon delivery of each
                  Aircraft through a separate invoice to be presented by
                  Embraer.
         B.       Buyer shall not withhold or deduct any portion of interest
                  payments or, if it must do so, shall fully gross up such
                  amounts; provided that Embraer shall cooperate reasonably with
                  Buyer in executing any exemption forms requested by Buyer.
9.4      RETURN OF PROGRESS PAYMENTS
         Upon receipt of the Purchase Price for each Firm Aircraft, Embraer
         shall return the progress payments for such Aircraft, minus the amount
         of any progress payments due during the same calendar month for
         undelivered Firm Aircraft. Embraer shall apply this retained amount [*]
10.      BRIDGE FINANCING
---------
* Confidential
                                                                    Page 6 of 10
         Embraer has provided a temporary financing structure ("Bridge
         Financing") for six (6) EMB-135 KL model aircraft to Chautauqua in
         accordance with the terms of the letter agreement, interim loan
         agreement, aircraft security agreement and security agreement
         supplement agreed between Embraer and Chautauqua for each such
         Aircraft. Any breach, default or failure to perform under the Bridge
         Financings by Chautauqua shall be a breach of the Purchase Agreement.
         Any breach, default or failure to perform by Buyer under the Purchase
         Agreement shall be an "Event of Default" under the Bridge Financings,
         as such term is defined in the Bridge Financing agreements.
11.      CONSIGNMENT
         Buyer is entitled to a spare parts consignment of [*] for Chautauqua,
         up to a maximum of [*] A portion of such consigned spare parts
         inventory shall be made available to Buyer in [*] , with additional
         inventory to be made available on a schedule agreed by Embraer and
         Buyer that increases the inventory to the maximum amount within [*]
         after the first delivery of consigned spare parts.
         The identification of the parts which will be included in the Consigned
         Stock shall be mutually agreed upon by the Parties. During the
         consignment period, Embraer shall have the right to replace parts
         within the consigned inventory [*] , however, keeping the consigned
         inventory level.
         Availability of Consigned Stock to Buyer is conditioned upon Buyer,
         Chautauqua and Embraer's designee in the United States of America
         entering into a consignment agreement to be negotiated by Buyer and
         Embraer's designee in good faith within sixty (60) days following
         execution of this Agreement and Embraer's and Buyer's performance of
         their obligations thereunder. Nevertheless, the following conditions
         precedent shall be fulfilled to the reasonable satisfaction of Embraer
         and its designee:
         a. Buyer/Chautauqua has provided the appropriate fillings of UCC-1s and
         any other filings reasonably requested by Embraer, as to evidence
         Embraer's designee's ownership/security interest in the Consigned
         Stock; and
         b. Buyer/Chautauqua has provided evidence of appropriate insurance
         coverage for the Consigned Stock during shipment from Embraer's U.S.
         affiliates and during storage. Such insurance shall, among other
         stipulations, name Embraer or its designee, as timely determined by
         Embraer, as sole loss payee.
         The Parties furthermore agree that Buyer/Chautauqua shall pay Embraer a
         [*] , based upon the Embraer's price to Buyer for spares. The Consigned
         Stock will be consigned to Chautauqua for a period of [*] and shall
         decrease during the final [*] according to the same schedule by which
         it increased during the first [*] of the consignment. Upon expiration
         of such consignment period, Chautauqua
---------
* Confidential
                                                                    Page 7 of 10
         may return unused consigned spares or purchase the remaining relevant
         Consigned Stock.
         Buyer/Chautauqua shall pay Embraer the purchase price of each consigned
         spare part within [*] days of Chautauqua's removal of the consigned
         spare from the Consigned Stock. The price for the consigned spare parts
         shall be based upon [*] Embraer shall replenish the Consigned Stock as
         to be provided for in the Consignment Agreement in order to keep the
         inventory level of the Consigned Stock through the consignment period,
         except as provided to the contrary in this Section 10.
         In the event, for any reason the Purchase Agreement is terminated with
         respect to any Aircraft, the Consigned Stock shall be [*] .
12.      SIMULATOR DATA PACKAGE
         If, on or before [*] , (i) Buyer elects to acquire its own flight
         simulator, (ii) Buyer requests from Embraer [*] , (iii) Embraer and
         Buyer have entered into a [*] agreement [*] , and (iv) Embraer, Buyer
         and the simulator vendor have entered into an agreement with respect to
         [*] ; then Embraer shall [*] , which shall include [*] . Such [*] shall
         be provided to Buyer within [*] after Buyer's notification to Embraer
         [*] . Buyer may [*] ; provided that, subject to [*] provided Embraer
         and [*] have entered into an agreement with Buyer for [*] , in form and
         substance satisfactory to Buyer.
13.      MISCELLANEOUS
         All terms and conditions of the Purchase Agreement that have not been
         specifically altered or modified hereunder shall remain in full force
         and effect and time is of the essence under this Agreement.
         [The remainder of this page has been left blank intentionally.]
---------
* Confidential
                                                                    Page 8 of 10
[*]
---------
* Confidential
                                                                    Page 9 of 10
IN WITNESS WHEREOF, the Parties have caused this Agreement to be duly executed
and delivered by their proper and duly authorized officers and to be effective
as of the day and year first above written.
EMBRAER - Empresa Brasileira de         Republic Airways Holdings, Inc.
Aeronautica S.A.
By:                                     By:
   ----------------------------            -------------------------------------
Name:                                   Name:
     --------------------------              -----------------------------------
Title:                                  Title:
      -------------------------               ----------------------------------
By:
   ----------------------------
Name:
     --------------------------
Title:
      -------------------------
Witness:                                Witness:
        -----------------------                 --------------------------------
Name:                                   Name:
     --------------------------              -----------------------------------
                                                                   Page 10 of 10
                       SCHEDULE "1" - [*] BASIC CONDITIONS
Subject to the terms and conditions of Article 4.c of [*] Embraer agrees to
provide [*] for each Aircraft [*] actual sale of the Aircraft [*], as
applicable.
1.    Embraer will [*] of the Aircraft [*] means the actual delivery date of the
      relevant Aircraft, [*]months after the Actual Delivery Date.
2.    [*] with respect to an Aircraft, [*] or such lesser amount as the Buyer
      may elect [*]
3.    [*] means the greater [*] Embraer will negotiate in good faith
      [*]Notwithstanding anything above to the contrary, in the event that the
      Buyer [*]
4.    [*] means the actual cost of [*] determined as [*] as shown on the [*]
      with respect to [*]
5.    [*] means the [*] amount payable by [*] such amount determined to be the
      difference between [*]
6.    [*] means [*]contemplating [*] between [*] Embraer shall be informed of
      all such [*] as soon as available.
7.    [*] means the period commencing on the date which is [*] of the relevant
      Aircraft and ending on the date [*] of the relevant Aircraft.
8.    Embraer shall be [*] as soon as such are received and in any event at [*]
      If Embraer and Buyer fail to agree that [*]
9.    The Aircraft shall comply in full with, [*]
10.   Embraer shall have [*] but no obligation, [*]
11.   Each Party shall bear its own costs [*]
---------
* Confidential
                                                                     Page 1 of 1
                       SCHEDULE "2" - [*] BASIC CONDITIONS
Subject to the terms and conditions of Article 4.c of [*] Embraer agrees to
provide [*] for each Aircraft [*] actual sale of the Aircraft [*], as
applicable.
1.    Embraer will [*] of the relevant Aircraft, [*] of the relevant Aircraft,
      [*] months after the Actual Delivery Date.
2.    [*] with respect to an Aircraft, [*] or such lesser amount as the Buyer
      may elect [*]
3.    [*] means the greater [*] Embraer may, but will not be under the
      obligation to, [*]
4.    [*] means [*] provided, however, [*] Embraer shall be informed of [*]
5.    [*] means [*]
6.    Embraer shall be informed of [*] as soon as such [*]
7.    [*] means the actual [*] determined as[*] as shown on the [*], reduced by
      [*] further reduced by [*]
8.    [*] means the maximum amount payable [*] as the case may be, [*] such
      amount determined to be the difference between [*]
9.    Embraer shall have [*] but no obligation, [*]
10.   The Aircraft shall comply in full with, or exceed, the [*] Buyer shall
      provide Embraer with an [*]
11.   Each Party shall bear its own costs [*]
---------
* Confidential
                                                                     Page 1 of 1
             SCHEDULE "3-A" - EMB-145 AIRCRAFT PERFORMANCE GUARANTEE
1.    GUARANTEES
      Embraer, subject to the conditions and limitations hereby expressed, and
      considering the Aircraft with a maximum takeoff weight of [*] pounds ([*]
      kg) and equipped with ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇-▇▇▇▇▇ ▇▇▇▇▇▇▇ ▇▇ ▇▇▇▇▇▇
      engines, guarantees each Aircraft as follows:
      a.    On the Aircraft Actual Delivery Date, the Aircraft will comply with
            the following performance:
            a.1   CRUISE SPECIFIC AIR RANGE
                  The cruise specific air range at a gross weight of [*] pounds
                  ([*] Kg) in a standard day (ISA), at an altitude of [*] feet,
                  at [*] KTAS using not more than maximum cruise thrust, shall
                  not be less than the guarantee value:
                  NOMINAL:[*]       TOLERANCE:[*]     GUARANTEE:[*]
            A.2   MISSION PAYLOAD
                  a.2.1 The payload for a stage length of [*] nautical miles in
                        still air, shall not be less than the guarantee value:
                  GUARANTEE:  [*]
                  Note: the above guaranteed value is subject to the same
                  tolerance applicable to the M.E.W. pursuant to Paragraph a.3
                  below.
                  The above guarantee is based on the following conditions and
                  operating rules:
                  Stage Length:
                  The stage is defined as the sum of the distances for length
                  climb, cruise and descent.
                  Takeoff:
                  The airport altitude is at [*].
                  The takeoff weight is not limited by the airport conditions.
                  Maximum takeoff thrust is used for the takeoff.
                  Climbout Maneuver:
                  Following the takeoff [*], the Aircraft accelerates [*] while
                  climbing to [*] feet above the departure airport altitude and
                  retracting flaps and landing gear.
---------
* Confidential
                                                                     Page 1 of 8
                  Climb:
                  The Aircraft climbs from [*] feet above the departure airport
                  altitude to [*] feet altitude [*].
                  The Aircraft then accelerates [*].
                  The climb continues at [*] until [*] feet is reached.
                  The climb continues at [*] to cruise altitude.
                  The temperature is [*] during the climb.
                  Maximum climb thrust is used throughout the climb.
                  Cruise:
                  The Aircraft cruises at an average speed [*].
                  The cruise altitude is [*] feet.
                  The temperature is [*] during cruise.
                  The cruise thrust is not to exceed [*].
                  Descent:
                  The Aircraft descends [*].
                  The descent continues [*] to an altitude of [*] feet.
                  The temperature is [*] during descent.
                  Approach and Landing Maneuver:
                  The Aircraft decelerates to the final approach speed while
                  extending landing gear and flaps, then descends and lands.
                  The destination airport elevation is at sea level.
                  Fixed Allowances:
                  For the purpose of this guarantee and for the purpose of
                  establishing compliance with this guarantee, the following
                  shall be used as fixed quantities and allowances:
                  Taxi-out fuel:    [*].
                  Takeoff and Climbout Maneuver fuel:  [*].
                  Approach and Landing Maneuver fuel: [*].
                  Taxi-in fuel (shall be consumed from the reserve fuel): [*].
                  The usable reserve fuel remaining upon completion of the
                  landing:  [*].
                  A.2.2 OPERATIONAL EMPTY WEIGHT BASIS
                        Operational empty weight (OEW) derived in accordance
                        with Paragraph a.2.3 shall be used as the basis for [*].
                  A.2.3 EMB-145 WEIGHT SUMMARY
---------
* Confidential
                                                                     Page 2 of 8
         --------------------------------------------------------------------
                              ITEMS                    WEIGHT       WEIGHT
                                                        (KG)         (LB)
         --------------------------------------------------------------------
         --------------------------------------------------------------------
                                                               
           1 - M.E.W. Std. EMB-145 Aircraft              [*]         [*]
               Configuration
         --------------------------------------------------------------------
           2 - Option to std EMB-145 Aircraft (*)        [*]         [*]
         --------------------------------------------------------------------
           3 - M.E.W.  Customer Configuration            [*]         [*]
         --------------------------------------------------------------------
           4 - Operating Items                           [*]         [*]
         --------------------------------------------------------------------
           a - Pilot and Copilot (180 Lb each) (**)      [*]         [*]
         --------------------------------------------------------------------
           b - Stewardess (140 Lb each) (**)             [*]         [*]
         --------------------------------------------------------------------
           c - Engine oil                                [*]         [*]
         --------------------------------------------------------------------
           d - Hydraulic Fluid                           [*]         [*]
         --------------------------------------------------------------------
           e - Unusable Fuel                             [*]         [*]
         --------------------------------------------------------------------
           f - Apu Oil                                   [*]         [*]
         --------------------------------------------------------------------
           g - Toilet Fluid                              [*]         [*]
         --------------------------------------------------------------------
           h - Water                                     [*]         [*]
         --------------------------------------------------------------------
           i - Flight Kit                                [*]         [*]
         --------------------------------------------------------------------
           j - Crew Baggage                              [*]         [*]
         --------------------------------------------------------------------
           k - Catering Standard                         [*]         [*]
         --------------------------------------------------------------------
           l - Pass. Serv. Equip.                        [*]         [*]
         --------------------------------------------------------------------
           m - 2nd Attendant                             [*]         [*]
         --------------------------------------------------------------------
           5 - O. E. W.  Customer Configuration          [*]         [*]
         --------------------------------------------------------------------
            REMARKS:
            (*)  See Customer Options Table (Item a.2.4).
            (**) In accordance with Advisory Circular No: 120-27C (U.S.
                 Depart. Of Transp./FAA)
            A.2.4 CUSTOMER OPTIONS TABLE:
     ------------------------------------------------------------------------------
                               ITEMS                      OPT     WEIGHT     WEIGHT
                                                                   (KG)       (LB)
     ------------------------------------------------------------------------------
        A) OPTIONS TO STD AVIONIC CONFIGURATION
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
---------
* Confidential
                                                                     Page 3 of 8
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
        B) OPTIONAL SYSTEM / OTHER EQUIPMENT
           ------------------------------------------------------------------------
                                                                      
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
        C) INTERIOR OPTIONAL ITEMS
     ------------------------------------------------------------------------------
                                                                      
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
     ------------------------------------------------------------------------------
                              SUB-TOTAL (OPTIONS STD A/C)           [*]        [*]
     ------------------------------------------------------------------------------
      (1) Provisions for JAA Certification:
          - Wiring provision on the panel lamps for Filament Test
          - Structural provision for 10(degree) rudder deflection
          - Wiring provision for the nose landing gear door position indication
            in the EICAS
          - Provision for warning of the selection of Flaps 22(degree) to
            take-off
          - Provision for limitation of the hydraulic pressure on the speed
            brake actuator when the aircraft is above 200 knots
---------
* Confidential
                                                                     Page 4 of 8
      (2) Galley inserts (Trolley, SU, Hot Jugs) and catering are not included
      A.3   [*]
2.    AIRCRAFT CONFIGURATION
      2.1   The guarantees stated above are based on the EMB-145 Basic Aircraft
            configuration as defined in the Technical Description TD-145/010
            dated January 1998, plus specific Buyer configuration options as
            defined in Attachment "A" to the Purchase Agreement, (hereinafter
            referred to as the Detail Specification). Appropriate adjustment to
            the guarantees shall be made for changes in such Detail
            Specification approved in writing by the Buyer and Embraer. Such
            adjustments shall be accounted for by Embraer in its evidence of
            compliance with the guarantees.
            In the event a change is made to any law, governmental regulation or
            requirement, or in the interpretation of any such law, governmental
            regulation or requirement that affects the certification basis for
            the Aircraft, and as a result thereof, a change is made to the
            configuration and/or the performance of the Aircraft in order to
            obtain certification, the guarantees set forth in this Aircraft
            Performance Guarantee shall be appropriately modified to reflect any
            such change.
      2.2   The mission payload guarantee of Paragraph 1.a.2.1 and the
            Manufacturer's Empty Weight guarantee of Section 1.a.3 shall be
            adjusted by Embraer for the following in its evidence of compliance
            with such guarantees:
            (1)   Changes to the Detail Specification including Change Requests,
                  Master Changes, Change Orders or any other changes mutually
                  agreed upon between the Buyer and Embraer.
            (2)   The difference between the component weight allowances given
                  in the appropriate section of the Detail Specification and the
                  actual weights.
3.    GUARANTEE CONDITIONS
      3.1   All guaranteed performance data are based on the ICAO International
            Standard Atmosphere (ISA) and specified variations therefrom;
            altitudes are pressure altitudes.
      3.2   The FAA Regulations (FAR) referred to in this Schedule are, unless
            otherwise specified, the EMB-145 Certification Basis regulations
            specified in the Type Certificate Data Sheet. The reference number
            for the Certificate Data Sheet and its date of issue will be
            provided to Buyer within fifteen (15) days of type approval.
---------
* Confidential
                                                                     Page 5 of 8
      3.3   The cruise specific air range, speed and altitude capability, and
            the climb, cruise and descent portions of the mission guarantees
            include allowances for normal electrical power extraction and normal
            operation of the air conditioning system. Normal power extraction
            shall be defined as not less than a [*] total electrical and
            hydraulic loads. Normal operation of the air conditioning system
            shall be defined as operation in the automatic mode, with the
            temperature control set to maintain a nominal cabin temperature of
            75(Degree)F, and all air conditioning systems operating normally.
            This operation nominally allows a sea level cabin altitude to be
            maintained up to [*] feet and a maximum cabin pressure differential
            of [*] pounds per square inch at higher altitudes, with a nominal
            Aircraft cabin ventilation rate of [*] cubic feet per minute at [*]
            ft including passenger cabin recirculation (nominal recirculation is
            [*] percent not considering ▇▇▇▇▇▇ flow). The APU is turned off
            unless otherwise specified.
      3.4   The cruise specific air range, speed and altitude capability, and
            the climb, cruise, and descent portions of the mission guarantees
            are based on [*] Aircraft center of gravity location of [*] of the
            mean aerodynamic chord.
      3.5   Performance, where applicable, is based on a fuel Lower Heating
            Value (LHV) of [*] BTU per pound and a fuel density of [*] pounds
            per U.S. gallon.
4.    PARTIES' OBLIGATIONS ACCORDING TO THIS GUARANTEE
      RELATIVE TO THE GUARANTEES STATED IN PARAGRAPH 1.a above:
      4.1   During the Aircraft acceptance to be performed by Buyer in
            accordance with Article 7 of the Purchase Agreement, Buyer shall
            check the Aircraft performance specified in paragraph 1.a of this
            Schedule "3-A", by using the EMB-145 Aircraft Flight Manual (AFM)
            and by comparing the flight test data, at the atmospheric conditions
            prevailing during the flight, with the information presented in the
            EMB-145 Supplementary Performance Manual (SPM). All the performance
            guarantee under this Schedule "3-A" are in accordance with both
            manuals above mentioned, taking into consideration the established
            tolerances.
      4.2   Embraer's obligations in respect to the guarantees stated in
            Paragraph 1.a of this Schedule "3-A", are limited to Buyer's right
            to terminate the Purchase Agreement in respect to the relevant
            Aircraft, pursuant to Article 23.d. should it be reasonably verified
            that such Aircraft during the acceptance procedure specified in
            Article 7 of the Purchase Agreement, cannot comply with the
            performances guaranteed hereunder after Embraer has had a reasonable
            opportunity to cure such deficiencies in accordance with Article 7.
---------
* Confidential
                                                                     Page 6 of 8
      4.3   In case during the above mentioned acceptance procedure, it is
            proven that the Aircraft performance does not comply with the
            performances specified in Paragraph 1.a of this Schedule "3-A", but
            Buyer considers it satisfactory by accepting delivery of such
            Aircraft, then Embraer shall not be liable to any claim or demand
            whatsoever from Buyer with respect to such performance guarantees.
      4.4   Upon acceptance of the Aircraft by Buyer, all obligations of Embraer
            regarding the Aircraft performance guarantees specified in Paragraph
            1.a, shall cease.
5.    GUARANTEE COMPLIANCE
      5.1   Compliance with the guarantees of Section 1.a shall be based on the
            conditions specified in that section, the Aircraft configuration of
            Section 2 and the guarantee conditions of Section 3.
      5.2   Compliance with the takeoff, landing, and TOW Climb limit guarantees
            shall be based on the FAA-approved Airplane Flight Manual for the
            EMB-145.
      5.3   Compliance with the cruise specific air range, speed, and the climb,
            cruise and descent portions of the mission guarantees shall be
            established by calculations based on the comparison mentioned in
            Section 4.1 above..
      5.4   The data derived from tests shall be adjusted as required by
            conventional methods of correction, interpolation or extrapolation
            in accordance with established engineering practices to show
            compliance with provisions of Section 1.a.
      5.5   [*] shall be based on information in the appropriate approved weight
            and balance manual, or associated document or report.
      5.6   Compliance with the guarantees set forth in this Schedule does not
            depend on the engine meeting the performance requirements contained
            in the engine specification.
6.    EXCLUSIVE GUARANTEES
      6.1   The only performance guarantees applicable to the Aircraft are those
            set forth in this document. The performance guarantees set forth
            herein are established between Buyer and Embraer and may not be
            transferred or assigned to others, unless by previous written
            consent of Embraer.
      6.2   THE GUARANTEES, OBLIGATIONS AND LIABILITIES OF EMBRAER,
                                                                     Page 7 of 8
            AND REMEDIES OF BUYER SET FORTH IN THIS PERFORMANCE GUARANTEE ARE
            EXCLUSIVE AND IN SUBSTITUTION FOR, AND BUYER HEREBY WAIVES, RELEASES
            AND RENOUNCES, ALL OTHER RIGHTS, CLAIMS, DAMAGES AND REMEDIES OF
            BUYER AGAINST EMBRAER OR ANY ASSIGNED OF EMBRAER, EXPRESS OR
            IMPLIED, ARISING BY LAW OR OTHERWISE, WITH RESPECT TO ANY ACHIEVED
            PERFORMANCE.
      6.3   The terms and conditions of this Performance Guarantee do not alter,
            modify or impair, in any way, the terms and conditions of Attachment
            C (▇▇▇-▇▇▇ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇ CERTIFICATE) to the Purchase Agreement.
---------
* Confidential
                                                                     Page 8 of 8
                                 SCHEDULE "3-B"
                    EMB 140 - AIRCRAFT PERFORMANCE GUARANTEE
1.    GUARANTEES
      Embraer, subject to the conditions and limitations hereby expressed, and
      considering the Aircraft with a maximum takeoff weight of [*] pounds ( [*]
      kg) and equipped with ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇-▇▇▇▇▇ ▇▇▇▇▇▇▇ ▇▇ ▇▇▇▇▇▇/▇
      engines, guarantees each Aircraft as follows:
      A.    On the Aircraft Actual Delivery Date, the Aircraft will comply with
            the following performance:
            A.1   CRUISE SPECIFIC AIR RANGE
                  The cruise specific air range at a gross weight of [*] pounds
                  ( [*] Kg) in a standard day (ISA), at an altitude of [*] feet,
                  at [*] KTAS using not more than maximum cruise thrust, shall
                  not be less than the guarantee value:
                  NOMINAL:  [*]        TOLERANCE:  [*]       GUARANTEE:  [*]
            A.2   MISSION PAYLOAD
                  A.2.1 The payload for a stage length of [*] nautical miles in
                        still air, shall not be less than the guarantee value:
                        GUARANTEE:   [*]
                        Note: The above guaranteed value is subject to the same
                              tolerance applicable to the MEW pursuant to
                              Paragraph a.3 below.
                        The above guarantee is based on the following conditions
                        and operating rules:
                        Stage Length:
                        The stage is defined as the sum of the distances for
                        length climb, cruise and descent.
                        Takeoff:
                        The airport altitude is at SEA LEVEL.
                        The takeoff weight is not limited by the airport
                        conditions.
                        Maximum takeoff thrust is used for the takeoff.
                        Climbout Maneuver:
---------
* Confidential
                                                                     Page 1 of 8
                        Following the takeoff [*] , the EMB-140 Aircraft
                        accelerates [*] while climbing to [*] feet above the
                        departure airport altitude and retracting flaps and
                        landing gear.
                        Climb:
                        The EMB-140 Aircraft climbs from [*] feet above the
                        departure airport altitude to [*] feet altitude at [*] .
                        [*] The EMB-140 Aircraft then accelerates [*].
                        The climb continues at [*] until [*] feet is reached.
                        The climb continues at [*] to cruise altitude.
                        The temperature is [*] during the climb.
                        Maximum climb thrust is used throughout the climb.
                        Cruise:
                        The EMB-140 Aircraft cruises at an average speed of [*].
                        The cruise altitude is [*] feet.
                        The temperature is [*] during cruise.
                        The cruise thrust is not to exceed [*].
                        Descent:
                        The EMB-140 Aircraft descends  [*].
                        The descent continues [*] to an altitude of [*] feet.
                        The temperature is [*] during descent.
                        Approach and Landing Maneuver:
                        The EMB-140 Aircraft decelerates to the final approach
                        speed while extending landing gear and flaps, then
                        descends and lands.
                        The destination airport elevation is at sea level.
                        Fixed Allowances:
                        For the purpose of this guarantee and for the purpose of
                        establishing compliance with this guarantee, the
                        following shall be used as fixed quantities and
                        allowances:
                        Taxi-out fuel:     [*].
                        Takeoff and Climbout Maneuver fuel:   [*].
                        Approach and Landing Maneuver fuel:  [*].
                        Taxi-in fuel (shall be consumed from the reserve fuel):
                        [*].
                        The usable reserve fuel remaining upon completion of the
                        landing: [*].
---------
* Confidential
                                  Page 2 of 8
                  A.2.2 OPERATIONAL EMPTY WEIGHT BASIS
                        Operational empty weight (OEW) derived in accordance
                        with Paragraph a.2.3 shall be used as the basis [*] .
                  A.2.3 EMB-140 WEIGHT SUMMARY
         --------------------------------------------------------------------
                               ITEMS                       [*]        [*]
         --------------------------------------------------------------------
                                                                
           1 - M.E.W Std. EMB-140 Aircraft                 [*]        [*]
               Configuration(*)
         --------------------------------------------------------------------
         --------------------------------------------------------------------
           2 - Option to std EMB-140 Aircraft (**)         [*]        [*]
         --------------------------------------------------------------------
         --------------------------------------------------------------------
           3 - M.E.W.  Customer Configuration LR           [*]        [*]
               version
         --------------------------------------------------------------------
         --------------------------------------------------------------------
           4 - Operating Items                             [*]        [*]
         --------------------------------------------------------------------
           a - Pilot and Copilot (180 Lb each) (***)          [*]        [*]
         --------------------------------------------------------------------
           b - Stewardess (140 Lb each) (***)                 [*]        [*]
         --------------------------------------------------------------------
           c - Engine oil                                     [*]        [*]
         --------------------------------------------------------------------
           d - Hydraulic Fluid                                [*]        [*]
         --------------------------------------------------------------------
           e - Unusable Fuel                                  [*]        [*]
         --------------------------------------------------------------------
           f - Apu Oil                                        [*]        [*]
         --------------------------------------------------------------------
           g - Toilet Fluid                                   [*]        [*]
         --------------------------------------------------------------------
           h - Water                                          [*]        [*]
         --------------------------------------------------------------------
           i - Flight Kit                                     [*]        [*]
         --------------------------------------------------------------------
           j - Crew Baggage                                   [*]        [*]
         --------------------------------------------------------------------
           k - Catering Standard                              [*]        [*]
         --------------------------------------------------------------------
           l - Pass. Serv. Equip.                             [*]        [*]
         --------------------------------------------------------------------
           m - 2nd Attendant                                  [*]        [*]
         --------------------------------------------------------------------
         --------------------------------------------------------------------
           5 - O. E. W.  Customer Configuration LR         [*]        [*]
               version
         --------------------------------------------------------------------
         --------------------------------------------------------------------
---------
* Confidential
                                                                     Page 3 of 8
            REMARKS:
            (*)  See Customer Options Table (Item a.5.4).
            (**) In accordance with Advisory Circular No: 120-27C (U.S.
                 Depart. Of Transp./FAA)
                  A.2.4 CUSTOMER OPTIONS TABLE:
     ------------------------------------------------------------------------------
                               ITEMS                      OPT  WEIGHT     WEIGHT
                                                                (KG)       (LB)
     ------------------------------------------------------------------------------
        A) OPTIONS TO STD AVIONIC CONFIGURATION
     ------------------------------------------------------------------------------
                                                                   
            [*]                                           [*]    [*]        [*]
           ------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
     ------------------------------------------------------------------------------
        B) OPTIONAL SYSTEM / OTHER EQUIPMENT
     ------------------------------------------------------------------------------
                                                                   
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
        C) INTERIOR OPTIONAL ITEMS
     ------------------------------------------------------------------------------
                                                                   
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
---------
* Confidential
                                                                     Page 4 of 8
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
            [*]                                           [*]    [*]        [*]
     ------------------------------------------------------------------------------
     ------------------------------------------------------------------------------
                             SUB-TOTAL (OPTIONS STD A/C)            [*]        [*]
     ------------------------------------------------------------------------------
     (1) Galley inserts (Trolley, SU, Hot Jugs) and catering are not included
      A.3   [*]
2.    EMB-140 AIRCRAFT CONFIGURATION
      2.1   The guarantees stated above are based on the EMB-140 Basic Aircraft
            configuration as defined in the Technical Description TD-140/002
            dated April 2000, plus specific Buyer configuration options as
            defined in Attachment "A" to the Purchase Agreement, (hereinafter
            referred to as the Detail Specification). Appropriate adjustment to
            the guarantees shall be made for changes in such Detail
            Specification approved in writing by the Buyer and Embraer. Such
            adjustments shall be accounted for by Embraer in its evidence of
            compliance with the guarantees.
            In the event a change is made to any law, governmental regulation or
            requirement, or in the interpretation of any such law, governmental
            regulation or requirement that affects the certification basis for
            the EMB-140 Aircraft, and as a result thereof, a change is made to
            the configuration and/or the performance of the EMB-140 Aircraft in
            order to obtain certification, the guarantees set forth in this
            EMB-140 Aircraft Performance Guarantee shall be appropriately
            modified to reflect any such change.
      2.2   The guarantee payloads of Paragraph 1.a.5 and the Manufacturer's
            Empty Weight guarantee of Section 1.a.6 shall be adjusted by Embraer
            for the following in its evidence of compliance with such
            guarantees:
            (1)   Changes to the Detail Specification including Change Requests,
                  Master Changes, Change Orders or any other changes mutually
                  agreed upon between the Buyer and Embraer.
---------
* Confidential
                                                                     Page 5 of 8
            (2)   The difference between the component weight allowances given
                  in the appropriate section of the Detail Specification and the
                  actual weights.
3.    GUARANTEE CONDITIONS
      3.1   All guaranteed performance data are based on the ICAO International
            Standard Atmosphere (ISA) and specified variations therefrom;
            altitudes are pressure altitudes.
      3.2   The FAA Regulations (FAR) referred to in this Schedule are, unless
            otherwise specified, the EMB-140 Certification Basis regulations
            specified in the Type Certificate Data Sheet. The reference number
            for the Certificate Data Sheet and its date of issue will be
            provided to Buyer within fifteen (15) days of type approval.
      3.3   The takeoff and landing guarantees are based on hard surface, level
            and dry runways with no wind or obstacles, no clearway or stopway,
            and with automatic anti-skid operative unless otherwise specified.
            The takeoff performance is based on no engine bleed for air
            conditioning or thermal anti-icing and the Auxiliary Power Unit
            (APU) turned off unless otherwise specified. The improved climb
            performance procedure will be used for takeoff as required. The
            landing data is based on the use of automatic spoilers.
      3.4   The cruise specific air range, speed and altitude capability, and
            the climb, cruise and descent portions of the mission guarantees
            include allowances for normal electrical power extraction and normal
            operation of the air conditioning system. Normal power extraction
            shall be defined as not less than a [*] total electrical and
            hydraulic loads. Normal operation of the air conditioning system
            shall be defined as operation in the automatic mode, with the
            temperature control set to maintain a nominal cabin temperature of
            75(DEGREE)F, and all air conditioning systems operating normally.
            This operation nominally allows a sea level cabin altitude to be
            maintained up to [*] feet and a maximum cabin pressure differential
            of [*] pounds per square inch at higher altitudes, with a nominal
            EMB-140 Aircraft cabin ventilation rate of [*] cubic feet per minute
            at [*] ft including passenger cabin recirculation (nominal
            recirculation is [*] percent not considering ▇▇▇▇▇▇ flow). The APU
            is turned off unless otherwise specified.
      3.5   The cruise specific air range, speed and altitude capability, and
            the climb, cruise, and descent portions of the mission guarantees
            are based on an EMB-140 Aircraft center of gravity location of [*]
            of the mean aerodynamic chord.
---------
* Confidential
                                                                     Page 6 of 8
      3.6   Performance, where applicable, is based on a fuel Lower Heating
            Value (LHV) of [*] BTU per pound and a fuel density of [*] pounds
            per U.S. gallon.
4.    PARTIES' OBLIGATIONS ACCORDING TO THIS GUARANTEE
      RELATIVE TO THE GUARANTEES STATED IN PARAGRAPH 1.a above:
      4.1   During the EMB-140 Aircraft acceptance to be performed by Buyer in
            accordance with Article 7 of the Purchase Agreement, Buyer shall
            check the EMB-140 Aircraft performance specified in paragraph 1.a of
            this Schedule A, by using the EMB-140 Aircraft Flight Manual (AFM)
            and by comparing the flight test data, at the atmospheric conditions
            prevailing during the flight, with the information presented in the
            EMB-140 Supplementary Performance Manual (SPM). All the performance
            guarantee under this Schedule A are in accordance with both manuals
            above mentioned, taking into consideration the established
            tolerances.
      4.2   Embraer's obligations in respect to the guarantees stated in
            Paragraph 1.a of this Schedule A, are limited to Buyer's right to
            terminate the Purchase Agreement in respect to the relevant EMB-140
            Aircraft, pursuant to Article 23.d. should it be reasonably verified
            that such EMB-140 Aircraft during the acceptance procedure specified
            in Article 7 of the Purchase Agreement, cannot comply with the
            performances guaranteed hereunder after Embraer has had a reasonable
            opportunity to cure such deficiencies in accordance with Article 7.
      4.3   In case during the above mentioned acceptance procedure, it is
            proven that the EMB-140 Aircraft performance does not comply with
            the performances specified in Paragraph 1.a of this Schedule "3-B",
            but Buyer considers it satisfactory by accepting delivery of such
            EMB-140 Aircraft, then Embraer shall not be liable to any claim or
            demand whatsoever from Buyer with respect to such performance
            guarantees.
      4.4   Upon acceptance of the EMB-140 Aircraft by Buyer, all obligations of
            Embraer regarding the Aircraft performance guarantees specified in
            Paragraph 1.a, shall cease.
5.    GUARANTEE COMPLIANCE
      5.1   Compliance with the guarantees of Section 1.a shall be based on the
            conditions specified in that section, the EMB-140 Aircraft
            configuration of Section 2 and the guarantee conditions of Section
            3.
---------
* Confidential
                                                                     Page 7 of 8
      5.2   Compliance with the takeoff, landing, and TOW Climb limit guarantees
            shall be based on the FAA-approved Airplane Flight Manual for the
            EMB-140.
      5.3   Compliance with the cruise specific air range, speed, and the climb,
            cruise and descent portions of the mission guarantees shall be
            established by calculations based on the comparison mentioned in
            Section 4.1 above.
      5.4   The data derived from tests shall be adjusted as required by
            conventional methods of correction, interpolation or extrapolation
            in accordance with established engineering practices to show
            compliance with provisions of Section 1.a.
      5.5   [*] shall be based on information in the appropriate approved weight
            and balance manual, or associated document or report.
      5.6   Compliance with the guarantees set forth in this Schedule does not
            depend on the engine meeting the performance requirements contained
            in the engine specification.
6.    EXCLUSIVE GUARANTEES
      6.1   The only performance guarantees applicable to the EMB-140 Aircraft
            are those set forth in this document. The performance guarantees set
            forth herein are established between Buyer and Embraer and may not
            be transferred or assigned to others, unless by previous written
            consent of Embraer.
      6.2   THE GUARANTEES, OBLIGATIONS AND LIABILITIES OF Embraer, AND REMEDIES
            OF Buyer SET FORTH IN THIS PERFORMANCE GUARANTEE ARE EXCLUSIVE AND
            IN SUBSTITUTION FOR, AND Buyer HEREBY WAIVES, RELEASES AND
            RENOUNCES, ALL OTHER RIGHTS, CLAIMS, DAMAGES AND REMEDIES OF Buyer
            AGAINST Embraer OR ANY ASSIGNED OF Embraer, EXPRESS OR IMPLIED,
            ARISING BY LAW OR OTHERWISE, WITH RESPECT TO ANY ACHIEVED
            PERFORMANCE.
      6.3   The terms and conditions of this Performance Guarantee do not alter,
            modify or impair, in any way, the terms and conditions of Attachment
            C (AIRCRAFT WARRANTY CERTIFICATE) to the Purchase Agreement.
---------
* Confidential
                                                                     Page 8 of 8
                SCHEDULE "4" - DIRECT MAINTENANCE COST GUARANTEE
References to "Aircraft" in this Direct Maintenance Cost Guarantee shall be
deemed to include all EMB-145 and EMB-135 KL model aircraft delivered (or to be
delivered) to Chautauqua as operator pursuant to Purchase Agreement DCT-025/98
between Embraer and Solitair Corp., and all aircraft to be delivered to
Chautauqua as operator pursuant to Amended and Restated Purchase Agreement
DCT-025/98 between Embraer and Republic Airways Holdings, Inc. The "Guarantee
Term" under this Direct Maintenance Cost Guarantee shall be deemed to have begun
on [*].
I.    Embraer, subject to the terms, conditions and limitations contained in
      this Schedule "4", shall guarantee the material maintenance cost (the
      "Maintenance Guarantee") for the fleet of Aircraft as follows:
II.   The Maintenance Guarantee for the Aircraft fleet shall be for the period
      which begins at [*] ("Guarantee Term").
      a)    For the first [*] period commencing with the first actual Aircraft
            delivery date to Buyer, regarding expenses related to material cost,
            the Achieved cumulative Maintenance Cost - AMC for replacement,
            repair and overhauls of Buyer's Aircraft fleet, shall not exceed a
            Maintenance Cost Guarantee rate of [*] .
      b)    For the first [*] period commencing with the [*] , regarding
            expenses related to material cost, the Achieved cumulative
            Maintenance Cost - AMC for replacement, repair and overhauls of
            Buyer's Aircraft fleet, shall not exceed a Maintenance Cost
            Guarantee rate of [*]
      b)    The [*] shall be [*] in accordance with [*] the Purchase Agreement.
      c)    Measurement will be computed annually on the anniversary date of [*]
            The results will be reconciled year by year until [*]
      d)    In the event at the end of each annual measurement period, the AMC
            is higher than the MCG, Embraer shall provide a spare parts credit
            (CRn) to Buyer as provided for below: [*]
      e)    Buyer shall calculate and submit to Embraer the AMC quarterly,
            within 30 days after the end of each quarter during the Guarantee
            Term. The guarantee contained in this Schedule "4" shall terminate
            in the event Buyer fails to submit the AMC to Embraer as required.
            The Parties shall use [*] efforts to reach an agreement over the
            data annually within [*] after the submission of AMC in regard to
            any fourth quarter.
            In the event that the AMC contains [*] which is out of the
            reasonable control of [*] , the Parties shall also discuss the
            reasons for such [*] and whether it
---------
* Confidential
                                                                     Page 1 of 7
            should be included in the calculation of the AMC. Any credit amount
            will be credited to Buyer thirty (30) days after the agreement
            regarding the annual period. Such credit may be used by Buyer only
            toward [*]
      f)    This Maintenance Guarantee is based upon the following assumptions,
            and any change to the assumptions shall result in an appropriate
            recalculation of the MCG rate.
            1.    Fleet size: A minimum fleet size of [*] Aircraft delivered in
                  accordance with this Agreement.
            2.    Utilization: The guarantee covers [*] flight hours per cycle,
                  [*] APU hour per flight hour. Buyer's EMB-145 and EMB-135KL
                  fleet-wide average annual Aircraft utilization shall be [*]
                  flight hours, plus or minus [*] In the event that the Aircraft
                  utilization is more than [*] different of the conditions
                  described in this paragraph, [*] shall be adjusted in
                  accordance with the "Aircraft [*] which has already been
                  provided by Embraer to Buyer.
            3.    Operators labor rate: [*] man hour.
            4.    Maintenance Review Board Report- (MRB-145/1150) rev-2.
      g)    The following are the elements covered under this Maintenance
            Guarantee:
            1.    Material cost for non-repairable parts purchased from or
                  through Embraer and Embraer approved vendors.
            2.    Overhaul/repair costs incurred at Embraer approved repair
                  facilities.
            3.    Expendable which can be accounted for on an unit basis, i.e.
                  filters, gaskets, excluding wire, rivets, nuts, bolts.
            4.    Parts and materials consumed through scheduled maintenance
                  according to the Maintenance Review Board Report-
                  (MRB-145/1150).
      h)    The following elements are not covered under this guarantee:
            1.    Costs associated with taxes, levies, imposts, customs fees.
            2.    Shipping, receiving, ferry, storage, warehousing and insurance
                  expenses.
            3.    General administrative and overhead expenses.
            4.    Restoration expenses incurred due to damage to or failure of
                  Aircraft, components or parts caused by accident, incident,
                  FOD or Acts of God, negligence, abuse, misuse and/or
                  maintenance errors.
---------
* Confidential
                                                                     Page 2 of 7
            5.    When the Aircraft or any of its parts has/have been altered or
                  modified by Buyer, without prior approval from Embraer or from
                  the manufacturer of the parts through a service bulletin,
                  provided such approvals have not been unreasonably withheld.
            6.    Bulk consumable including but not limited to deicing fluid,
                  water, oil, sealant, washing compounds, cleansers, solvents,
                  and lubricants.
            7.    Labor cost (excluding the [*] related to [*] , and [*] Service
                  Bulletins implementation, provided that [*] have been [*] in
                  writing by [*] in order to [*] .
            8.    Service bulletins.
            9.    Parts or components returned from Vendors with "no-fault"
                  found, i.e., re-certification charges without any repair and
                  associated labor. Any part removed and replaced from an
                  Aircraft which does not solve the Aircraft problem (poor
                  troubleshooting) and associated labor.
            10.   Leasing or loan fees related to components which are being
                  used in place of a failed unit.
            11.   Any part supplied on a "no-charge basis" or for which a
                  warranty credit or replacement part has been supplied.
            12.   Aircraft downtime costs.
            13.   Any parts that are changed during scheduled or unscheduled
                  maintenance, due to failure, that are still under the warranty
                  period and, are not submitted to Embraer or the suppliers for
                  warranty credit.
            14.   Spare parts prices that exceed the prices obtainable from
                  Embraer, provided, in the event that [*] in a reasonable time
                  frame, [*] may [*] , and [*] will reasonably agree on [*] .
            15.   In cases of deterioration, wear, breakage, damage or any other
                  defect resulting from the use of inadequate packing methods
                  when returning items to Embraer or its representatives.
            16.   Maintenance problems caused by Buyer's negligence or misuse of
                  parts or Buyer's failure to take all maintenance actions on
                  the Aircraft as recommended in all applicable maintenance
                  manuals.
            17.   Maintenance problems involving Aircraft or parts that has/have
                  been involved in an accident, or when parts either defective
                  or not complying
---------
* Confidential
                                                                     Page 3 of 7
                  to manufacturer's design or specification have been used.
            18.   Maintenance problems involving parts that have had their
                  identification marks, designation, seal or serial number
                  altered or removed.
            19.   Extraordinary costs incurred as a result of any labor
                  disruption or dispute involving a significant work action
                  which affects in whole or part the Aircraft's normal operation
                  or maintenance.
            20.   Engines and related LRU costs.
            21.   Auxiliary Power Unit (APU) and related LRU costs
            22.   BFE (Buyer Furnished Equipment)
III.  The foregoing maintenance guarantee is provided subject to Buyer's
      adherence to the following general conditions:
      a.    Airplane Operation
            Aircraft shall be operated in airline service in accordance with the
            FAA regulations and as recommended by Embraer through the official
            and updated Operations and Airplane Flight Manual.
      b.    Inspection Program
            The Aircraft shall be maintained in accordance with the then-current
            Maintenance Review Board Report- (as of the date of execution of
            this Agreement, MRB-145/1150), and the checks shall in no event
            occur at a time [*] . Buyer's Maintenance Program must have
            provisions for escalating the checks interval as soon as the FAA
            allows. Buyer's program should also include the use of task cards to
            assist the maintenance personnel in performing inspection task.
      c.    Aircraft Manuals
            Buyer shall keep a complete set of Embraer recommended manuals
            up-to-date and available to airline personnel for assisting them
            with the maintenance and operation of the Aircraft. A set of
            recommended manuals or a electronic link to the data should be
            available at all maintenance bases (line or heavy) and shall be
            maintained with the latest revisions at all times.
      d.    Warranty
            Buyer shall have at minimum, one person which will be dedicated to
            the Aircraft warranty program. This person(s) will be trained by
            Embraer warranty department on the correct procedures for filing
            Buyer warranty claims in accordance with mutually agreed format.
            This person(s) shall also be responsible for the filing of warranty
            claims directly to suppliers for credit, repair or replacement.
---------
* Confidential
                                                                     Page 4 of 7
      e.    Parts Repair
            All shop repairs shall be performed in Embraer's or Embraer's
            suppliers' authorized repair shops.
      f.    Staff levels
            Buyer shall have available reasonable staff to properly maintain the
            Aircraft during scheduled and unscheduled maintenance. This shall
            include, but not be limited to, mechanics, electricians, avionics
            specialists, inspectors, cleaners, ground personnel and flight crews
            licensed or certified by FAA as required by FAA regulations.
      g.    Training
            Buyer is required to put in place a training program approved by the
            local airworthiness authority, which, at a minimum, shall include
            the following items:
            1.    initial and recurrent training for pilots in the Aircraft;
            2.    initial and recurrent training for flight attendants in the
                  Aircraft; and
            3.    initial and recurrent training for the maintenance staff
                  (airframe, powerplant, electric avionics specialists) in the
                  Aircraft.
            A reasonable number of maintenance specialist will require
            supplier's training. Buyer is required to train to the above
            standards a reasonable number of new hired employee who will work in
            or on the Aircraft.
      h.    Spare Parts Limitation
            Spare parts price shall not exceed the prices obtainable from
            Embraer. In the event that Embraer cannot supply a part to Buyer in
            a reasonable time frame, Embraer may authorize the purchase of such
            part by Buyer from a third party at a price in excess of Embraer's
            price, and the cost of such part shall be included in the event it
            is commercially reasonable under the circumstances, provided Buyer
            has used commercially reasonable efforts to maintain the minimum
            stock level as and to the extent set forth in the IPL and agreed in
            the reprovisioning meeting.
      i.    Buyer will be required to provide Embraer an every three month
            service bulletin status report, containing service bulletin number,
            Aircraft serial number, Aircraft total time and total cycles.
      j.    When Embraer recommends that Buyer implement a service bulletin
            which improves performance or dispatch reliability, enhances flight
            operations or decreases maintenance costs, Embraer's Customer
            Support Department shall send a written notice addressed to Buyer
            with recommendations that such service bulletin be complied with on
            the Aircraft. In the event that [*] are reasonably acceptable [*]
            Embraer at its discretion shall [*] , otherwise [*] shall be
            mutually agreed by the Parties. If Buyer chooses to comply with such
            service
---------
* Confidential
                                                                     Page 5 of 7
            bulletin, Buyer will then order whatever parts are required by the
            service bulletin and schedule the Aircraft for incorporation.
      k.    Ground Support Equipment
            Embraer shall provide Buyer a list of tooling and ground support
            equipment required to maintain the Aircraft, this list shall be
            subject to Buyer's reasonable approval. Buyer will be required to
            maintain these levels of required tooling and ground support
            equipment in good working order at all times.
      l.    Reliability Reporting
            Buyer is to provide monthly to Embraer a Aircraft reliability
            report. This report shall include Aircraft total time and cycles,
            component removals, shop finding reports and tear down reports (for
            each failure completed) by authorized agencies and SDR's (Service
            Difficult Report) with date, Aircraft registration, problem
            description, maintenance action, and part number and serial number
            of the components removed and installed. Buyer shall use the ATA 100
            chapter breakdown format for all reports.
      m.    Accounting System
            1.    Buyer shall have an accounting systems, subject to Embraer's
                  reasonable approval, which demonstrates the ability to
                  discriminate between chargeable and non-chargeable costs and
                  expenses. Buyer's accounting system shall be presented to
                  Embraer [*] after [*].
            2.    Buyer shall also provide on a [*] basis an activity and
                  expenditure report satisfactory to Embraer.
            3.    Embraer and Buyer may convene frequently meetings to address
                  issues concerning the AMC and to identify methods to decrease
                  Buyer's maintenance costs. At a minimum, Embraer and Buyer
                  shall have two meeting per year to confirm and compute all
                  costs claimed by Buyer. Buyer shall permit Embraer access to
                  all Buyer data which can be used to verify any reports
                  produced pursuant to this Schedule .
      n.    Duplicated Guarantee
            If Buyer negotiates directly with any of Embraer's suppliers/vendors
            a particular maintenance cost guarantee or equivalent program, the
            portion of cost related to this equipment/system shall be excluded
            from the AMC calculation and from the MCG rate, specified in Article
            II.a, and shall result in an appropriate recalculation of the MCG.
IV.   Buyer shall not unreasonably reject Embraer's recommendations, changes or
      solutions to elements of maintenance which would result in cost savings,
      as reasonably determined by the Parties.
---------
* Confidential
                                                                     Page 6 of 7
V.    EXCEPT AS OTHERWISE PROVIDED IN THIS AGREEMENT THE GUARANTEES, OBLIGATIONS
      AND LIABILITIES OF EMBRAER, AND REMEDIES OF BUYER SET FORTH IN THIS
      AIRCRAFT MAINTENANCE COST GUARANTEE ARE EXCLUSIVE AND IN SUBSTITUTION FOR,
      AND BUYER HEREBY WAIVES, RELEASES AND RENOUNCES, ALL OTHER RIGHTS, CLAIMS,
      DAMAGES AND REMEDIES OF BUYER AGAINST EMBRAER OR ANY ASSIGNEE OF EMBRAER,
      EXPRESS OR IMPLIED, ARISING BY LAW OR OTHERWISE, WITH RESPECT TO ANY
      GUARANTEED LEVEL OF AIRCRAFT MAINTENANCE COSTS.
VI.   The guarantee hereby expressed is established between Embraer and Buyer,
      therefore it cannot be transferred or assigned to others and during the
      Guarantee term the fleet shall be operated by only by Chautauqua, unless
      stated in this Agreement or by previous written consent of Embraer.
                                                                     Page 7 of 7
                  SCHEDULE "5" - DISPATCH RELIABILITY GUARANTEE
References to "Aircraft" in this Dispatch Reliability Guarantee shall be deemed
to include all EMB-145 and EMB-135KL model aircraft delivered (or to be
delivered) to Chautauqua as operator pursuant to Purchase Agreement DCT-025/98
between Embraer and Solitair Corp., and all aircraft to be delivered to
Chautauqua as operator pursuant to the Amended and Restated Purchase Agreement
DCT-025/98 between Embraer and Republic Airways Holdings, Inc. The first [*]
period under this Dispatch Reliability Guarantee shall be deemed to have begun
on [*]
I.    Definitions
      a.    Available for Dispatch
            An Aircraft which is on the ground and cleared for dispatch by
            signature of the responsible maintenance personnel of Chautauqua, as
            defined in Article II.a of this Schedule "5", at least [*]before the
            scheduled departure time of the initial flight in any given day
            shall be deemed to be "available for dispatch".
      b.    Maintenance Interruption
            1.    A Maintenance Interruption occurs when the malfunction of an
                  item, or necessary checking and/or corrective actions, cause a
                  flight not to be available for dispatch, or a flight delay
                  exceeding [*].
            2.    A Maintenance Interruption of any or all the flight legs of a
                  multileg flight constitute only one interruption.
            3.    To be accounted as a Maintenance Interruption, any reported
                  malfunction, either verbal or written, must result in
                  maintenance corrective action.
            4.    A repetitive problem shall not be counted as a Maintenance
                  Interruption. However, [*] shall be counted as Maintenance
                  Interruptions.
      c.    Achieved Dispatch Reliability Percentage ("ADR")
            Achieved Dispatch Reliability Percentage ("ADR") is the actual
            dispatch reliability percentage obtained by the Chautauqua's fleet
            of Aircraft in regular revenue service.
            ADR shall be computed monthly commencing with [*]by Chautauqua, as
            follows:
            [*]
---------
* Confidential
                                                                     Page 1 of 8
            [*]
            [*]
            [*]
II.   Embraer, subject to the conditions and limitations expressed in this
      Schedule "5", will guarantee the Aircraft's dispatch reliability
      percentage as follows:
      a.    This Dispatch Reliability Guarantee will be applicable only for
            Aircraft first operated by Chautauqua and only so long as the
            Aircraft are operated by Chautauqua.
      b.    The average ADR for the first [*] period after [*] shall be [*] The
            average ADR for the second [*] period [*] shall be [*] The average
            ADR for the third [*] period after commencement of commercial
            operations [*] shall be [*]The average ADR for the [*] period [*]
            (the "Final Period") shall be [*](collectively "GDR").
      c.    In the event that the ADR any [*] period referred to above is lower
            than GDR for the relevant period, Embraer shall diligently, after
            notification by Buyer:
            1.    Develop and offer modification kits to improve ADR under
                  conditions to be mutually agreed to by the Parties;
            2.    Make recommendations concerning Chautauqua's programs,
                  publications and maintenance and operational policies to
                  improve ADR; and
            3.    Take all measures, as deemed necessary and appropriate by
                  Embraer when vendor action does not provide the required
                  improvement in the ADR.
      d.    In the event that the average ADR at the end of any [*]period
            described in paragraph II.b. above is lower than the GDR for such
            period, Embraer shall credit BUYER for Maintenance Interruptions
            calculated according to the following formula:
            [*]
            [*]
            [*]
            [*]
            [*]
---------
* Confidential
                                                                     Page 2 of 8
            In the event the average ADR at the end of any [*] period described
            in paragraph II.b. above is [*]for such period, then the [*]
            calculated according to the formula described above shall be [*]
            Buyer or Chautauqua shall calculate measurements and submit them to
            Embraer within 60 days after the end of each [*] period referred to
            in Article II a. of this Schedule "5". Embraer and Buyer shall
            attempt to reach an agreement over the data within 60 days of
            the submission. Any achieved credit amount will be credited to Buyer
            [*] after the [*] data conciliation. Such credit may be used by
            Buyer only toward [*]
      e.    This dispatch reliability guarantee is based upon the following
            assumptions provided by Chautauqua, and any change to the
            assumptions shall be cause for reevaluation or adjustments of this
            guarantee in Embraer's sole discretion.
            Utilization: Chautauqua's EMB-145 and EMB-135KL fleet-wide average
                         annual Aircraft utilization shall be at least [*]flight
                         hours, plus or minus [*]with a minimum average flight
                         hours per flight cycle, of [*]
      f.    The following elements are not covered under this guarantee:
            Interruptions of scheduled flights due to reasons other than
            Aircraft mechanical failures, including without limitation:
            -     Air Traffic Control
            -     Weather
            -     Acts of God (i.e. natural disasters, floods and earthquakes,
                  lightning strikes, bird strikes etc.).
            -     Accidents
            -     Incidents
            -     Negligence
            -     Force majeure
            -     Crew refusal
            -     Optional equipment other than that identified on Attachment
                  "A" to the Purchase Agreement
            -     Operational delays not related to maintenance
            -     Passenger and/or baggage loading
            -     Non-availability of spares or equipment, except when
                  [*] as provided for in paragraph [*];
            -     Non-availability of personnel;
            -     Operation interruptions or Maintenance Interruptions which
                  could have been prevented if the Minimum Equipment List
                  ("▇▇▇") issued and/or approved by the local regulatory
                  authority was followed
---------
* Confidential
                                                                     Page 3 of 8
            -     If the FAA grounds Chautauqua's fleet, or one of Chautauqua's
                  Aircraft,
            -     Maintenance problems caused by Chautauqua's negligence or
                  misuse of parts or Chautauqua's failure to take all
                  maintenance actions on the Aircraft as recommended in all
                  applicable maintenance manuals
            -     Maintenance problems involving Aircraft or parts that has/have
                  been involved in an accident, or when parts either defective
                  or not complying to manufacturer's design or specification
                  have been used;
            -     Maintenance problems involving parts that have had their
                  identification marks, designation, seal or serial number
                  altered or removed
            -     Maintenance problem resulting from inadequate parking for
                  shipment and storage.
            -     Conditions that exist prior to dispatch which lead to a flight
                  interruption and could have been prevented by maintenance
                  prior to dispatch (including but not limited to worn, flat and
                  cut tires, servicing (ATA Chapter 12), hard landing, dead
                  batteries, and worn brakes).
III.  The foregoing dispatch reliability guarantee is provided subject to
      Chautauqua's adherence in all material respects to the following general
      conditions:
      a.    Airplane Operation
            Aircraft shall be operated in airline service in accordance with FAA
            regulations and as recommended by Embraer through the official and
            most updated Operations and Airplane Flight Manual. Chautauqua shall
            have available one spare aircraft for each twenty Aircraft at all
            times.
      b.    Inspection Program
            The Aircraft shall be maintained in accordance with the most current
            EMB-145 MRB document and using the "A" and "C" checks intervals
            Chautauqua's program must have provisions for escalating the checks
            intervals as soon as the FAA allows. Chautauqua's program should
            also include the use of task cards to assist the maintenance
            personnel in performing inspection tasks.
      c.    Aircraft Manuals
            Chautauqua shall keep a complete set of Embraer recommended manuals
            up-to-date and available to airline personnel for assisting them
            with the maintenance and operation of the Aircraft. A set of
            recommended manuals should be available at all maintenance bases
            (line or heavy) and shall be maintained with the latest revisions at
            all times.
      d.    ▇▇▇
            Chautauqua shall keep its ▇▇▇ up to date, with the most current
            issue.
                                                                     Page 4 of 8
      e.    Stocking Levels
            Chautauqua shall stock and maintain Embraer and suppliers'
            reasonable recommended spare parts in inventory, throughout the
            guarantee period. There shall be a minimum inventory level at each
            line maintenance base along with the major parts being stored at the
            heavy maintenance facility. Embraer shall provide a list of
            recommended parts inventory to the Chautauqua prior to delivery of
            the first Aircraft and within sufficient time for the Chautauqua
            through Buyer to place an order with Embraer or the supplier.
            Chautauqua shall annually provide an inventory list to Embraer which
            shows current stocking levels and the locations of all EMB-145 and
            EMB-135KL parts, and Embraer will then make any recommendations on
            additional inventory if needed.
      f.    Parts Repair
            All shop repairs shall be performed in FAA certificated and
            authorized repair shops.
      g.    Staff Levels
            Chautauqua shall have available reasonable staff to properly
            maintain the Aircraft during scheduled and unscheduled maintenance.
            This shall include, but not be limited to, mechanics, electricians,
            avionics specialists, inspectors, cleaners, ground personnel and
            flight crews licensed or certified by the FAA as required by
            appropriate FAA regulations.
      h.    Training
            Chautauqua shall put and keep in place a training program approved
            by the FAA, which, at a minimum, shall include the following items:
            1.    Initial and recurrent training for pilots in the Aircraft;
            2.    Initial and recurrent training for flight attendants in the
                  Aircraft; and
            3.    Initial and recurrent training for the maintenance staff
                  (airframe, powerplant, electric avionics specialists) in the
                  Aircraft.
                  Any maintenance specialist (engine, APU, avionics) will
                  require suppliers' training.
                  Chautauqua shall train to the above standards any new hired
                  employee who will work in or on the Aircraft.
      i.    Aircraft Cleaning
            Chautauqua shall keep the Aircraft reasonably clean, inside and out,
            by commercial airline standards at all times. This includes without
            limitation, the engines, wheel ▇▇▇▇▇, nacelles, landing gear and
            flight control areas.
                                                                     Page 5 of 8
      j.    Service Bulletins
            When Embraer recommends that Chautauqua implement a service bulletin
            which improves performance or dispatch reliability, enhances flight
            operations or decreases maintenance costs, [*], Embraer Customer
            Support Department shall contact Chautauqua's Vice President of
            Maintenance, in writing, with recommendations that the service
            bulletin be complied with. Chautauqua will schedule the Aircraft for
            incorporation of such service bulletin [*], but, subject to
            Embraer's agreement, may schedule it for incorporation during a
            maintenance check, so as to minimize interruption to scheduled
            service.
      k.    Ground Support Equipment
            Embraer shall provide Chautauqua two lists of tooling and ground
            support equipment required to maintain the Aircraft which lists
            shall be subject to Chautauqua's reasonable approval. One list will
            cover line maintenance bases while the other will apply to heavy
            maintenance facilities. Chautauqua will be required to maintain
            these levels of required tooling and ground support equipment in
            good working order at all times.
      l.    Reliability Reporting
            Chautauqua shall provide monthly to Embraer a complete Aircraft
            reliability report. This report shall include Aircraft total time
            and cycles, dispatch reliability, on-time performance, completion
            factor, pilot reports, schedule interruption description, and
            component removals. Shop finding reports and tear down reports (for
            each failure completed) by authorized agencies and SDR's with date,
            Aircraft registration, problem description, maintenance action, and
            part number and serial number of the components removed and
            installed shall be maintained by the Designated Operator and shall
            be provided to Embraer as requested. Chautauqua shall use the ATA
            100 chapter breakdown format for all reports.
      m.    Rejection
            Chautauqua shall not unreasonably reject Embraer's
            recommendations/changes/solutions which in Embraer's opinion, would
            result in an improvement in Chautauqua's dispatch reliability. Any
            such rejection shall be cause for re-evaluation or adjustment of
            this guarantee in Embraer's sole discretion.
      n.    Certification or Regulatory Changes
            The achieved maintenance interruption shall not take into account
            those interruptions which were originated by conformity to mandatory
            regulatory change.
      o.    Achieved Dispatch Reliability Review Meeting
            An Achieved Dispatch Reliability Review Meeting shall be scheduled,
            if necessary, and at the end of each six (6) month period of
            Chautauqua's Aircraft
---------
* Confidential
                                                                     Page 6 of 8
            operation. Representatives of Chautauqua and Embraer shall
            participate in the meetings and will:
            1.    Review current Achieved Dispatch Reliability;
            2.    Eliminate irrelevant or non-Aircraft-intrinsic interruption
                  claims from computed cancellation rates; and
            3.    Review Chautauqua's compliance with Service Bulletins as
                  required by Article III.j of this Schedule "5", review
                  disputed claims, and consider methods for improvement of
                  Achieved Dispatch Reliability.
                  Chautauqua shall permit Embraer access to all of its data
                  which can be used in understanding and analyzing the dispatch
                  reliability failure.
IV.   Suspension
      This guarantee shall be automatically suspended and shall not apply during
      the period of any labor disruption or dispute involving a significant work
      action which affects in whole or in part the Aircraft normal operation and
      maintenance.
V.    Chautauqua will not include in the calculation of the ADR Maintenance
      Interruptions occurring under any of the circumstances listed below:
      a.    When the Aircraft has been used in an attempt to break records, or
            subjected to experimental flights, or in any other way not in
            conformity with the flight manual or the airworthiness certificate,
            or subject to any manner of use in contravention of the applicable
            aerial navigation or other regulations or rules, issued or
            recommended by government authorities of whatever country in which
            the Aircraft is operated, when accepted and recommended by ICAO; and
      b.    When the Aircraft or any of its parts has/have been altered or
            modified by Chautauqua, without prior approval from Embraer or from
            the manufacturer of the parts through a service bulletin, provided
            such approval has not been unreasonably withheld.
VI.   THE GUARANTEES, OBLIGATIONS AND LIABILITIES OF EMBRAER, AND REMEDIES OF
      BUYER SET FORTH IN THIS DISPATCH RELIABILITY GUARANTEE ARE EXCLUSIVE AND
      IN SUBSTITUTION FOR, AND BUYER HEREBY WAIVES, RELEASES AND RENOUNCES, ALL
      OTHER RIGHTS, CLAIMS, DAMAGES AND REMEDIES OF BUYER AGAINST EMBRAER OR ANY
      ASSIGNEE OF EMBRAER, EXPRESS OR IMPLIED, ARISING BY LAW OR OTHERWISE, WITH
      RESPECT TO ANY ACHIEVED DISPATCH RELIABILITY.
                                                                     Page 7 of 8
VII.  The terms and conditions of this dispatch reliability guarantee do not
      alter, modify or impair, in any way, the terms and conditions of
      Attachment C (Aircraft WARRANTY CERTIFICATE) to the Purchase Agreement.
VIII. The guarantee hereby expressed is established between Embraer and Buyer
      and it cannot be transferred or assigned to others, unless by previous
      written consent of Embraer.
IX.   As of condition of the guarantee hereby expressed, Chautauqua shall
      execute a waiver consistent with Section VI of this Schedule "5", in a
      form acceptable to Embraer.
                                                                     Page 8 of 8
                                  SCHEDULE "6"
                    EMB-140 AIRCRAFT UNDER [*] CONFIGURATION
                 AIRCRAFT SPECIFIC CONFIGURATION, FINISHING AND
                               REGISTRATION MARKS
                              STANDARD 140 AIRCRAFT
   THE AIRCRAFT SHALL BE MANUFACTURED ACCORDING TO THE STANDARD CONFIGURATION
    SPECIFIED IN EMBRAER'S TECHNICAL DESCRIPTION TD-140/002 DATED AS OF APRIL
    2000, TYPE CERTIFICATION FAA, AND INCLUDING THE FOLLOWING OPTIONAL ITEMS:
                               OPTIONAL EQUIPMENT:
                 2.1 OPTIONS TO STANDARD AVIONICS CONFIGURATION
                                       [*]
                       2.2 OPTIONAL SYSTEM/OTHER EQUIPMENT
                                       [*]
                             INTERIOR OPTIONAL ITEMS
                                       [*]
                                  3. FINISHING
                             A. EXTERIOR FINISHING:
THE AIRCRAFT SHALL BE PAINTED ACCORDING TO THE AMR EAGLE COLOR AND PAINT SCHEME,
                  WHICH HAS BEEN SUPPLIED TO EMBRAER BY BUYER.
                             B. INTERIOR FINISHING:
Buyer has informed Embraer of its choice of materials and colors of all and any
 item of interior finishing such as seat covers, carpet, floor lining on galley
areas, side walls and overhead lining, galley lining and curtain. If Buyer opts
    to use different materials and or patterns, such schedule shall be agreed
                              between the Parties.
                              4. REGISTRATION MARKS
 The Aircraft shall be delivered to Buyer with the registration marks painted on
   them, which shall be supplied to Embraer by Buyer no later than [*] before
                each relevant Aircraft Contractual Delivery Date.
                                                                     Page 1 of 2
 IF THERE IS ANY CONFLICT BETWEEN THE TERMS OF THIS SCHEDULE "6" AND THE TERMS
  OF THE TECHNICAL DESCRIPTION TD-140/002, DATED APRIL 2000, THE TERMS OF THIS
                           SCHEDULE "6" SHALL PREVAIL.
                                                                     Page 2 of 2