Superseded. This AD was superseded by AD 2013-22-11. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2009-10-06
Effective 06/09/2009 · Published 05/05/2009
Airworthiness Directives; Pratt & Whitney (PW) JT9D-7R4 Series Turbofan Engines
Summary
The FAA is superseding an existing airworthiness directive (AD) for PW JT9D-7R4 series turbofan engines. That AD currently requires removing certain reduced cooling flow 2nd stage high-pressure turbine (HPT) vane assemblies installed in certain 2nd stage HPT vane cluster assemblies. It also requires a visual and a fluorescent penetrant inspection (FPI) of the 2nd stage HPT air seal assembly, part number (P/N) 815097…