AD 2015-17-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Turbomeca | S | Airworthiness Directives; Turbomeca S.A. Turboshaft Engines |
Unsafe Condition
Deterioration of the gas generator front bearing due to a link loss between the pump driver and the oil pump shaft.
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Required Actions
Inspect the pump driver assembly on the oil pump shaft, the pump driver splines, and the oil pump splines. If any part fails inspection, replace the failed part(s) with eligible parts before further flight.
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Compliance Time
Within specified times based on engine hours (EH): before exceeding 300 EH for engines with fewer than 250 EH, within 50 EH for engines with 250-299 EH, within 100 EH for engines with 300-799 EH, or during the next scheduled 500 EH inspection for engines with 800 EH or more.
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Affected Aircraft
Turbomeca S.A. Arrius 2F turboshaft engines with oil pump, part number (P/N) 0319155050, installed, except for engines overhauled in a Turbomeca repair center after January 1, 2013, or engines with serial number 34776 or higher where the oil pump was not replaced since the first flight.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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