Lufthansa Technik

Document ID: FAA-2008-0402-0002
Document Type: Public Submission
Agency: Federal Aviation Administration
Received Date: April 18 2008, at 05:40 AM Eastern Daylight Time
Date Posted: April 18 2008, at 12:00 AM Eastern Standard Time
Comment Start Date: April 7 2008, at 12:00 AM Eastern Standard Time
Comment Due Date: May 22 2008, at 11:59 PM Eastern Standard Time
Tracking Number: 8051198e
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This is comment on Rule

Airworthiness Directives; Boeing Model 747 Airplanes and Model 767 Airplanes Equipped With General Electric CF6-80C2 and CF6-80A Series Engines

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GE never issued data to the airlines, how many spool down events occurred and the procedure as required acc. NPRM has not been used by the flight crew. Consequently it is hard to understand, why this procedure will be now mandetory, as it is usually common sense to use this procedure. LHT suggests to postpone the NPRM until the new ECU software mod. has been implemented and GE can present data which show the need to mandate the OM procedure.