AD 2018-23526
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | Turbofan | Airworthiness Directives; Pratt & Whitney Turbofan Engines |
Unsafe Condition
Loosening of the metering valve pilot valve (MVPV) end cap, leading to uncommanded high thrust events.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove the MVPV within certain fuel control units (FCUs) and replace it with a part eligible for installation, which includes a tamper proof feature to secure the end plugs.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
At the next FCU shop visit 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 (PW) PW2037, PW2037M, and PW2040 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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