Summary
We are adopting a new airworthiness directive (AD) for certain Pratt & Whitney Division (PW) PW4000-94 inch and PW4000-100 inch model turbofan engines. 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. We are issuing this AD to prevent failure of the HPC 10th stage disk, uncontained disk release, damage to the engine, and damage to the airplane.
Directive Details
AD Number
FAA-2015-4474
Document Number
2016-09687
Type
Rule
Publication Date
April 27, 2016
Effective Date
June 1, 2016
Affected Manufacturer
Pratt & Whitney Division Turbofan
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2015-4474
Topics
Official Documents
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