AD 2022-07-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | Division | Airworthiness Directives; Pratt & Whitney Division Turbofan Engines |
Unsafe Condition
Corrosion of the air/oil heat exchanger leading to oil leaks and potential engine failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the air/oil heat exchanger within 30 days prior to the first flight after the effective date of this AD. Depending on the results of the inspection, replace the air/oil heat exchanger. The air/oil heat exchanger may be inspected more than 30 days prior to the first flight after the effective date of this AD if the air/oil heat exchanger is subsequently stored in accordance with procedures from the manufacturer.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 days prior to the first flight after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
All Pratt & Whitney Division (PW) PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 model 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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