AD 2012-03-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Turbomeca | S | Airworthiness Directives; Turbomeca S.A. Turboshaft Engines |
Unsafe Condition
Uncoupling of the high-pressure/low-pressure (HP/LP) pump hydro-mechanical metering unit (HMU) low-pressure (LP) fuel pump impeller and the high-pressure (HP) fuel pump shaft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the transmissible torque between the LP fuel pump impeller and the HP fuel pump shaft. Replace the HMU if it does not pass the torque check.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 750 engine flight hours (EFH) from the effective date of this AD, but no later than 14 months 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 Turbomeca S.A. Arriel 2B and 2B1 turboshaft 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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