AD Amdt-39-14940
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Turbomeca | S | Airworthiness Directives; Turbomeca S.A. Arrius 2F Turboshaft Engines |
Unsafe Condition
Uncommanded in-flight shutdown of the engine, which could result in a forced autorotation landing and damage to the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace certain O-rings on the check valve piston in the lubrication unit at repetitive intervals.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Not specified.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Turbomeca S.A. Arrius 2F turboshaft engines that have not incorporated modification Tf75.
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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