AD 2016-08-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | Division | Airworthiness Directives; Pratt & Whitney Division Turbofan Engines |
Unsafe Condition
Crack found in the high-pressure compressor (HPC) 10th stage disk, caused by surface scratches from a manual polishing procedure during manufacture.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform an ultrasonic inspection (USI) or eddy current inspection (ECI) of the HPC 10th stage disk. Remove the disk if it fails inspection.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the compliance times specified in the AD, unless already done.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pratt & Whitney Division PW4000-94 inch and PW4000-100 inch model turbofan engines with HPC 10th stage disk, part number 51H710 or 53H976-06, installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.