AD 2011-24-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Turbomeca S.A. Arriel 2B Turboshaft Engines |
| engine | Turbomeca | S | Airworthiness Directives; Turbomeca S.A. Arriel 2B Turboshaft Engines |
Unsafe Condition
Non-conformities on adjustment of some hydromechanical units (HMUs) have been reported, potentially affecting the proper adjustment of the metering valve and leading to an uncommanded inflight shutdown.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect and functionally test the affected HMUs as described in the referenced service bulletins. Replace the HMU if the functional test fails or if the HMU is not listed in the approved list.
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Compliance Time
Before further flight
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Affected Aircraft
Turbomeca S.A. Arriel 2B turboshaft engines with a hydromechanical unit (HMU) having part number 0292860750 and serial numbers listed in Table 1 of the AD.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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