US Airways 2007 Annual Report Download - page 443

5.5 Climb, cruise and descent performance associated with the Guarantees will include allowances for normal electrical load and for normal engine air
bleed and power extraction associated with maximum cabin differential pressure as defined in Section **. Cabin air conditioning management during
performance demonstration as described in Paragraph 6.3 below may be such as to optimize the Original A319 Aircraft performance while meeting **.
Unless otherwise stated **.
5.6 The engines will be operated using not more than **
5.7 Where applicable the Guarantees assume the use of an approved fuel having a density of **
6 GUARANTEE COMPLIANCE
6.1 Compliance with the Guarantees will be demonstrated using operating procedures and limitations in accordance with those defined by the certifying
airworthiness authority unless otherwise stated.
6.2 Compliance with the take-off, second segment, approach climb, en-route one engine inoperative climb, landing and external noise elements of the
Guarantees will be demonstrated with reference to the approved flight manual.
6.3 Compliance with those parts of the Guarantees defined in Paragraphs 1 and 2 above not covered by the requirements of the certifying airworthiness
authority will be demonstrated by calculation based on data obtained during flight tests conducted on one (or more, at the Seller's discretion) A319
aircraft of the same aerodynamic configuration as the Original A319 Aircraft.
6.4 Compliance with the Manufacturer's Weight Empty guarantee defined in Paragraph 3 will be demonstrated with reference to a weight compliance
report.
6.5 Data derived from tests will be adjusted as required using conventional methods of correction, interpolation or extrapolation in accordance with
established aeronautical practices to show compliance with the Guarantees.
6.6 Compliance with the Guarantees is not contingent on engine performance defined in the engine manufacturer's specification.
6.7 The Seller undertakes to furnish the Buyer with a report or reports demonstrating compliance with the Guarantees at the Delivery of each of the
Original A319 Aircraft.
** Confidential Treatment Requested.
USA — Amended and Restated Airbus A320 Family Aircraft Purchase Agreement LA 8B-1 — 7 of 11
EXECUTION PRIVILEGED AND CONFIDENTIAL