Common use of Survey Height Clause in Contracts

Survey Height. Based on pilot reaction times and other factors, it is generally acknowledged that the lower the survey is flown, the higher the risk associated with the operation. Current industry practice often dictates low clearance heights. To achieve a safe survey height; the Company will specify the maximum clearance height possible, consistent with the objectives of the survey to be flown; and the Contractor will conduct a risk analysis that emphasizes the risk factors which pertain to survey height . These factors shall, as a minimum, include the following: Terrain relief and elevation above the trees or the tree canopy aircraft performance aircrew flight and duty times prevailing weather conditions anticipated density altitude pilot experience and recency planned flight speed