AD 2012-22-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | Division | Airworthiness Directives; Pratt & Whitney Division Turbofan Engines |
Unsafe Condition
Failure of the 3rd stage low-pressure turbine (LPT) duct segments, which could lead to LPT rotor damage, uncontained engine failure, and damage to the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove from service 3rd stage LPT duct segments with part numbers 50N095, 50N095-001, 50N235, 50N235-001, 50N494-01, 50N494-001, 50N495-01, and 50N495-001 at the next piece-part exposure after the effective date. Do not install these part numbers into any engine after the effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the compliance times specified, unless already done.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pratt & Whitney Division PW4050, PW4052, PW4056, PW4060, PW4060A, PW4060C, PW4062, PW4062A, PW4152, PW4156, PW4156A, PW4158, PW4160, PW4460, PW4462, and PW4650 turbofan engines, including models with any dash number suffix, with 3rd stage LPT duct segments part numbers 50N095, 50N095-001, 50N235, 50N235-001, 50N494-01, 50N494-001, 50N495-01, or 50N495-001 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
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