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Attachment A2

6-1162-RCN-1937

GEnx-1B*** Engines

Page 23

5.9 Cumulative Noise Certification Margin to the Chapter 4 / Stage 4 rule shall be defined as ***dB less than the sum of the differences between the three

certification values (flyover with cutback, peak lateral, and approach) of the Aircraft with respect to the three noise limits defined in ICAO Annex

16, Volume 1, Chapter 3 and 14 CFR Part 36 Stage 3.

6GUARANTEE COMPLIANCE

6.1 Compliance with the guarantees of Sections 2 and 3 shall be based on the conditions specified in those sections, the Aircraft configuration of

Section 4 and the guarantee conditions of Section 5.

6.2 Compliance with the enroute one-engine-inoperative altitude, the buffet onset portion of the all-engine altitude capability guarantees, the takeoff portion

of the mission guarantee, and the community sound level guarantees shall be based on the FAA approved Airplane Flight Manual for the Model 787-

6.3 Compliance with the all-engine altitude capability guarantees, and the climb, cruise and descent portions of the mission guarantees shall be

established by calculations based on flight test data obtained from an aircraft in a configuration similar to that defined by the Detail Specification.

6.4 The OEW used for compliance with the mission guarantees shall be the actual MEW plus the Standard and Operational Items Allowance in

Paragraph 03-60-00 of the Detail Specification.

6.5 The data derived from tests shall be adjusted as required by conventional methods of correction, interpolation or extrapolation in accordance with

established engineering practices to show compliance with these guarantees.

6.6 Compliance shall be based on the performance of the airframe and engines in combination, and shall not be contingent on the engine meeting its

manufacturer’s performance specification.

7EXCLUSIVE GUARANTEES

The only performance guarantees applicable to the Aircraft are those set forth in this Attachment.

P.A. No. 2484

AERO-B-BBA4-M12-0854 SS12-0424