US Airways 2007 Annual Report Download - page 785

Noise levels will be measured at a height of ** above the passenger compartment floor on the aisle center lines in the passenger seated area.
5 GUARANTEE CONDITIONS
5.1 The performance and noise certification requirements for the Aircraft, except where otherwise noted, will be as stated in Section 02 of the Specification.
5.2 For the determination of FAR take-off and landing performance a hard dry level runway surface with no runway strength limitations, no line-up
allowances, no obstacles, zero wind, atmosphere according to ISA, except as otherwise noted, and the use of centre of gravity positions, speed brakes,
flaps, landing gear and engines in the conditions liable to provide the best results will be assumed.
5.2.1 When establishing take-off and second segment performance no air will be bled from the engines for cabin air conditioning or anti-icing.
5.3 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 cabin differential pressure as defined in Section 21-30.31 of the Specification. Cabin air conditioning management
during performance demonstration as described in Subparagraph 6.3 below may be such as to optimise the Aircraft performance while meeting the
minimum air conditioning requirements defined above. Unless otherwise stated no air will be bled from the engines for anti-icing.
Cruise performance at ** and above is based on a centre of gravity position of **.
5.4 The engines will be operated using not more than the engine manufacturer's maximum recommended outputs for take-off, maximum go-round, maximum
continuous, maximum climb and cruise for normal operation unless otherwise stated.
5.5 Where applicable the Guarantees assume the use of an approved fuel having a density of ** per US gallon and a lower heating value of **.
5.6 Speech Interference Level (SIL) is defined as the arithmetic average of the sound pressure levels in the **. A-Weighted sound pressure level (dB(A)) is as
defined in the American National Standard Specification ANSI.4-1971.
5.7 All guaranteed interior noise levels refer to an aircraft with standard acoustic insulation, an interior completely furnished and equipped with standard cloth
seats. The effect of Buyer furnished equipment other than standard passenger cloth seats (standard seats or acoustically
LA 8D — 5 of 9
USA — Airbus A330 Purchase Agreement
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