AD 2018-02-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | Division | Airworthiness Directives; Pratt & Whitney Division Turbofan Engines |
Unsafe Condition
multiple cracked outer diffuser cases
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
initial and repetitive inspections to detect cracks in the outer diffuser case and removal from service of cases that fail inspection
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 1,000 flight cycles from the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
PW PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 turbofan engines
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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