AD 2016-06-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Turbomeca | S | Airworthiness Directives; Turbomeca S.A. Turboshaft Engines |
Unsafe Condition
Loosening of the nut attaching the swivel union to the engine power turbine module M04, leading to oil leakage from the low-pressure oil system and potential in-flight shutdown.
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Required Actions
Tighten the nut, part number 9560130990, attaching the swivel union to the engine power turbine module M04 to 15 Newton-meters torque. Use a backup wrench to prevent the swivel union from rotating.
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Compliance Time
Within 30 engine hours or 7 days after the effective date of this AD, whichever occurs first.
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Affected Aircraft
All Turbomeca S.A. Makila 2A and 2A1 turboshaft engines that have incorporated Turbomeca S.A. Service Bulletin No. 298 79 2831, Version B, dated November 13, 2015, or earlier.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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