China Southern Airlines

Document ID: FAA-2010-1024-0002
Document Type: Public Submission
Agency: Federal Aviation Administration
Received Date: December 23 2010, at 12:00 AM Eastern Standard Time
Date Posted: December 30 2010, at 12:00 AM Eastern Standard Time
Comment Start Date: December 22 2010, at 12:00 AM Eastern Standard Time
Comment Due Date: February 7 2011, at 11:59 PM Eastern Standard Time
Tracking Number: 80bbe716
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Docket No. FAA-2010-1024; Directorate Identifier 2010-NE-34-AD indicates that GE found cracks in the HPCR 8-10 stage spool weld joint between the 9-10 stages, but no details, so I suggest GE to supply the the details about the time and cycles of the cracked engine and the spools and totally how many engines or spools were found. Secondly, what's the terminal action for this issue? Thirdly, will this issue affect the part life limit extension in 2011 according to the infomation from GE in Vietnam WTT 2009? Finally, can the initial and repetitive FPI and ECI of the HPCR 8-10 stage spool at each piece-part exposure in the shop prevent failure during normal engine operation effectively since the HPC module overhaul interval is 48,000 hours or 6000 cycles when the spool can have piece-part exposure per current GE90 WPG?

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Total: 3
China Southern Airlines
Public Submission    Posted: 12/30/2010     ID: FAA-2010-1024-0002

Feb 07,2011 11:59 PM ET
The Boeing Company
Public Submission    Posted: 02/03/2011     ID: FAA-2010-1024-0005

Feb 07,2011 11:59 PM ET
GE Aviation
Public Submission    Posted: 01/28/2011     ID: FAA-2010-1024-0004

Feb 07,2011 11:59 PM ET