Revise para (k) Engine Core Vibration Survey as follows:
Add to subpara (6):
Vibration surveys carried out in an engine test cell as part of a performance run fulfill the requirements of the on-wing vibration survey.
Reason: The current proposal limits acceptance of the test cell vibration survey to the initial survey only. This would allow for engines removed for performance restoration or other reasons between the 350 cycle period to be 'reset' to give the maximum flexibility to the operator with no loss of safety.
Related Comments
Total: 3
Frank Westwood Public SubmissionPosted: 10/31/2011
ID: FAA-2010-0068-0022
Frank Westwood
This is comment on Proposed Rule
Airworthiness Directives: General Electric Co. Turbofan Engines
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Related Comments
Public Submission Posted: 10/31/2011 ID: FAA-2010-0068-0022
Dec 05,2011 11:59 PM ET
Public Submission Posted: 11/23/2011 ID: FAA-2010-0068-0023
Dec 05,2011 11:59 PM ET
Public Submission Posted: 12/06/2011 ID: FAA-2010-0068-0024
Dec 05,2011 11:59 PM ET