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Tue, Dec 13, 2011

AD: Pratt & Whitney Corp.

AD NUMBER: 2011-25-10

MANUFACTURER: Pratt & Whitney Corp. (PW) JT9D-7R4H1 Turbofan Engines
SUBJECT: Airworthiness Directive 2011-25-10
ACTION: Final rule

SUMMARY: This AD was prompted by reports of cracks in five high-pressure compressor (HPC) shafts. This AD requires removing certain HPC shafts before their certified life limits and establishes a new, lower life-limit for these parts. The FAA is issuing this AD to correct the unsafe condition on these products.

DATES: This AD is effective January 17, 2012

FMI: AD

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