Document ID: chunk:federal_register_of_legislation:F2007L01338:body:0:p2
Version: federal_register_of_legislation:F2007L01338
Segment Type: other
Provision Reference: 
Character Range: 2740–3871

life of the Flight Mission currently installed.

                     (i) If NO, no further actions in accordance with this AD are required.

                     (ii) If YES, reject the relevant BR715 LP Compressor (Fan) Disc Assembly.

             Note 2:  EASA Emergency AD 2007-0116-E dated 4 May 2007 refers.
Compliance:  No later than 100 flight cycles after the effective date of this AD.
             This Airworthiness Directive becomes effective on 11 May 2007.
Background:  The most recent 3D FEM modelling has resulted in the need to reconsider the disc lives as currently show in the Time Limits Manual.  The current Post Certification Life Statement for the Low Pressure (LP) Compressor (Fan) Disc Assembly revises the Declared Safe Cyclic Life (DSCL) from 33000 flight cycles to 25000 flight cycles for both the BR715 LP Compressor (Fan) Disc Assembly Part No. BRH10048 and BR715 LP Compressor (Fan) Disc Assembly Part No. BRH19253, when installed in the BR700-715A1-30 engine model and operated against the Hawaiian Flight Mission.

Charles Lenarcic
Delegate of the Civil Aviation Safety Authority

8 May 2007