AD Amdt-39-15028
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Turbomeca | S | Airworthiness Directives; Turbomeca S.A. Arriel 2B Turboshaft Engines |
Unsafe Condition
Loss of control of engine fuel flow in manual control mode or mixed control mode, which can lead to engine overspeed and in-flight engine shutdown, resulting in a forced autorotation landing or accident.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect, clean, lubricate, and check for proper operation of the HMU acceleration controller axle. Inspect and lubricate the P3 cover and HMU acceleration control axle on HMUs that are not modified to TU132.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours after the effective date of this AD.
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Affected Aircraft
Turbomeca S.A. Arriel 2B turboshaft engines with Modification TU62A incorporated, excluding engines incorporating TU132.
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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