US Airways 2007 Annual Report Download - page 486

conditions liable to provide the best results **
5.2.1 When establishing take-off and second segment performance **
5.3 When establishing the approach and landing climb performance cabin **
5.4 The en-route one engine inoperative climb performance will be established with the amount of engine air bleed associated with the maximum cabin
altitude as specified in **and an average ventilation rate not less than the amount defined in the **, but no air will be bled from the engines for anti-icing.
All performance data are based on Normal air conditioning mode.
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 Subparagraph 6.3 below may be such as to optimize the 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 and by the Seller 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) A321-200
aircraft of the same aerodynamic configuration as the Aircraft and incorporated in the In-Flight Performance Program and data bases ("the IFP")
appropriate to the 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.
** Confidential Treatment Requested.
USA — Amended and Restated Airbus A320 Family Aircraft Purchase Agreement LA 8D-1 — 8 of 13
EXECUTION PRIVILEGED AND CONFIDENTIAL