United Airlines 2012 Annual Report Download - page 422
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Attachment A2
6-1162-RCN-1937
GEnx-1B*** Engines
Page 20
3SOUND LEVELS
3.1 Community Sound Levels
The Aircraft shall be certified in accordance with the requirements of 14 CFR Part 36, Stage 4 and ICAO Annex 16, Volume 1, Chapter 4.
3.2 Cumulative Noise Certification Margin to Chapter 4 / Stage 4 Rule
The Cumulative Noise Certification Margin to the Chapter 4 / Stage 4 Rule shall not be less than ***EPNdB.
3.3 Departure Condition
The sound level for Departure Noise shall be defined as the numerical average of flyover (with thrust cutback) and lateral noise certification values.
The Departure Noise level for this aircraft with a brake release gross weight of *** pounds shall qualify this aircraft for the London “QC2” noise
quota count class as defined in United Kingdom AIP Supplement S8/2009 applicable 29 March 2009, and shall not be greater than the following
guarantee value:
GUARANTEE: ***EPNdB
3.4 Arrival Condition
The sound level for Arrival Noise shall be defined as *** EPNdB less than the approach noise certification value. The Arrival Noise level for this
aircraft with a landing gross weight of *** pounds shall qualify this aircraft for the London “QC1” noise quota count class as defined in United
Kingdom AIP Supplement S8/2009 applicable 29 March 2009, and shall not be greater than the following guarantee value:
GUARANTEE: ***EPNdB
P.A. No. 2484
AERO-B-BBA4-M12-0854 SS12-0424