AD Amdt-39-11225
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Various | Airworthiness Directives; AlliedSignal Inc. (Formerly Textron Lycoming) Model ALF502R-5 and ALF502R-3A Turborfan Engines |
Unsafe Condition
Reports of uncommanded reduction of engine thrust (rollback) and loss of thrust control in icing conditions.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Incorporate an improved fan core inlet anti-ice system to prevent ice accretion on the fan core inlet stator vane surfaces.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
AlliedSignal Inc. (formerly Textron Lycoming) Model ALF502R-5 and ALF502R-3A turbofan engines.
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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