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Thu, Apr 28, 2016

AD: Pratt & Whitney Division Turbofan Engines

AD NUMBER: 2016-08-09

PRODUCT: Certain Pratt & Whitney Division (PW) PW4000-94 inch and PW4000-100 inch model turbofan engines.

ACTION: Final Rule

SUMMARY:  This AD was prompted by a report of a crack found in the high-pressure compressor (HPC) 10th stage disk.

This AD requires performing an ultrasonic inspection (USI) or an eddy current inspection (ECI) of the HPC 10th stage disk.

The FAA is issuing this AD to prevent failure of the HPC 10th stage disk, uncontained disk release, damage to the engine, and damage to the airplane.

DATES: This AD is effective June 1, 2016.

FMI: AD

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