US Airways 2007 Annual Report Download - page 1083

5.1.2 APU Noise
The APU of the A350-800 XWB will **
5.2 Interior Noise
5.2.1 Interior Noise in Flight
5.2.1.1 Cockpit Noise
At a pressure altitude of ** and a true Mach number of ** in straight and level flight in still air under ISA conditions, the guaranteed A-weighted
Sound Pressure Level (SPL) and the Speech Interference Level (SIL) will not exceed the following values:
Guarantee
SPL dB(A) **
SIL dB **
Noise levels will be measured at the Captain's and First Officer's seat position at head level with normal cockpit air conditioning and ventilation in
operation.
5.2.1.2 Cabin Noise
At a pressure altitude of ** and a true Mach number of ** in straight and level flight in still air under ISA conditions, the guaranteed A-weighted Sound
Pressure Level (SPL) and the Speech Interference Level (SIL) will not exceed the following values, considering leather seats are part of the cabin lay-out.
Guarantee
(a 2 dB extra is accounted for leather seats installation)
SPL dB(A) **
SIL dB **
Noise levels will be measured at a height of ** above the passenger compartment floor on the aisle center lines in the passenger seated area. Effects on
noise of Buyer furnished equipment and installations by or on behalf of the Buyer are not covered by this guarantee. The noise levels are provided for
leather seats.
6 EMISSIONS (for information only)
Seller position is that the Engine Manufacturer directly provides AWE/USA with an aircraft engine emissions guarantee. Consequently the following is a
reminder (for information only) of the regulations the engine will have to comply with during its certification.
** Confidential Treatment Requested.
USA — Amended and Restated Airbus A350 XWB Purchase Agreement
EXECUTION
LA 8-1.A — 15 of 21
PRIVILEGED AND CONFIDENTIAL