Summary
We are adopting a new airworthiness directive (AD) for the products listed above. This AD requires initial and repetitive fluorescent penetrant inspections (FPIs) and eddy current inspections (ECIs) of the high-pressure compressor rotor (HPCR) 8-10 stage spool, part numbers (P/Ns) 1844M90G01 and 1844M90G02, for cracks between the 9-10 stages at each piece-part exposure. This AD was prompted by cracks discovered on one HPCR 8-10 spool between the 9-10 stages in the weld joint. We are issuing this AD to prevent failure of the HPCR 8-10 stage spool, uncontained engine failure, and damage to the airplane.
Directive Details
AD Number
FAA-2010-1024
Document Number
2011-17621
Type
Rule
Publication Date
July 14, 2011
Effective Date
August 18, 2011
Affected Manufacturer
General Electric Company GE90-76B
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2010-1024
Topics
Official Documents
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