Summary
The FAA is adopting a new airworthiness directive (AD) for Pratt & Whitney models PW2037, PW2037(M), and PW2040 turbofan engines. This AD requires 12th stage disks of certain high-pressure compressor (HPC) drum rotor disk assemblies, to be inspected for cracks by Pratt & Whitney using a special eddy current inspection procedure. This AD results from six HPC 12th stage disks found cracked during HPC module disassembly at overhaul. We are issuing this AD to prevent uncontained failure of the HPC 12th stage disk and airplane damage.
Directive Details
AD Number
FAA-2009-0417
Document Number
E9-15398
Type
Rule
Publication Date
July 8, 2009
Effective Date
July 23, 2009
Affected Manufacturer
Pratt & Whitney Models PW2037, PW2037(M), and PW2040 Turbofan
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2009-0417
Topics
Official Documents
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