David A. Bud

Document ID: FAA-2006-24145-0017
Document Type: Public Submission
Agency: Federal Aviation Administration
Received Date: February 19 2008, at 03:53 PM Eastern Standard Time
Date Posted: February 20 2008, at 12:00 AM Eastern Standard Time
Comment Start Date: February 20 2008, at 12:00 AM Eastern Standard Time
Comment Due Date: February 19 2008, at 11:59 PM Eastern Standard Time
Tracking Number: 803b8706
View Document:

This is comment on Rule

Airworthiness Directives; General Electric Company CF6-45 and CF6-50 Series Turbofan Engines

View Comment

NPRM FAA-2006-24145, Compliance section, paragraph (f) states to "Replace the forward ceterbody, P/N 1313M55G01 or G02, P/N9076M28G09 or G10, and aft centerbody, P/N 1313M56G01 or 9076M46G05 with a forward and aft centerbody that have been modified using with the Accomplishment Instructions, Section 3, of GE service bulletin No. CF6-50 S/B 78-0244, dated July 30, 2007." GE Aviation has been made aware by repair sources that the rivets identified in GE service bulletin No. CF6-50 S/B 78-0244, dated July 30, 2007, Section 2. MATERIAL INFORMATION A. (1) are non-procurable in the market. The blind rivets are identified as P/N NAS1398M3-2 and NAS1398M3-3. GE Aviation has revised GE service bulletin No. CF6-50 S/B 78-0244 to Revision 1 and identified alternate rivet P/N NAS13984-2 and NAS13984-3 which are available for procurement in the market. The Repair Document referenced in GE service bulletin No. CF6-50 S/B 78-0244, dated July 30, 2007 has also been revised to reflect the alternate rivets. GE RD 250-215-S2 was revised to GE RD250-215-S3. Therefore, the Compliance section of NPRM FAA-2006-24145 should reference compliance with the Accomplishment Instructions in GE service bulletin No. CF6- 50 S/B 78-0244 revision 1.