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5 NOISE

5.1 Exterior Noise

5.1.1 Noise Certification

The A340-313 powered by CFM56-5C4/P engines at a MTOW of ** and a MLW of ** shall be certified in accordance with the requirements of

Chapter 4 of ICAO Annex 16, Volume I, Amendment 7, effective March 21, 2002, with a cumulative margin of **.

Noise data shall be obtained and evaluated in accordance with the requirements of Appendix 2 of Third Edition of ICAO Annex 16, Volume I.

5.2 Interior Noise

5.2.1 Interior Noise On Ground

5.2.1.1 Cabin

During ground operation, with the APU and the air conditioning in normal operation and passenger doors open or closed, the guaranteed A-weighted

Sound Pressure Level (SPL) and the Speech Interference Level (SIL) in the passenger seated area shall be as follows:

Guarantee

SPL [dB(A)] **

SIL [dB] **

Noise levels shall be measured at a height of ** above the passenger compartment floor on the aisle center lines in the passenger seated area.

5.2.2 Interior Noise in Flight

5.2.2.1 Cockpit

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) shall be as follows:

Guarantee

SPL dB(A)] **

SIL [dB] **

LA 8F — 17 of 24

USA — Airbus A330 Purchase Agreement

EXECUTION PRIVILEGED AND CONFIDENTIAL

**Confidential Treatment Requested.