AD 2014-16-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Turbomeca | S | Airworthiness Directives; Turbomeca S.A. Turboshaft Engines |
Unsafe Condition
Failure of the high-pressure (HP) fuel pump/metering valve and module M01 drive gear, caused by deterioration of the splines, which could interrupt fuel supply and lead to engine in-flight shutdowns.
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Required Actions
Inspect the splines of the HP fuel pump/metering valve and module M01 drive gear for wear, corrosion, scaling, pitting, and chafing. Replace parts if they fail inspection. Ensure all installed parts have passed the required inspection.
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Compliance Time
Within 25 flight hours or 6 months after the effective date, whichever occurs earlier.
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Affected Aircraft
Turbomeca S.A. Makila 2A and Makila 2A1 turboshaft engines with HP fuel pump part numbers 0 298 91 806 0 or 0 298 91 805 0, excluding those with Turbomeca modification TU 59.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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