AD 2012-07-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Turbomeca | S | Airworthiness Directives; Turbomeca S.A. Turboshaft Engines |
Unsafe Condition
The P3 air pipe (first section) and the RH rear half-wall could rub each other. Rubbing between the pipe and the RH rear half-wall may lead to rupture of the P3 air pipe (first section), which could cause an uncommanded power loss to flight idle.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the clearance between the P3 air pipe (first section) and the RH rear half-wall for sufficient clearance (0.5 mm or more). Replace damaged parts before further flight. Replace the RH rear half-wall if contact is found but no damage. Repeat inspections as specified for certain engine installations or re-installations. Installation of RH rear half-wall, P/N 0 319 99 008 0, is terminating action.
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Compliance Time
Within 100 engine hours after the effective date of this AD.
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Affected Aircraft
Turbomeca S.A. Arrius 2F turboshaft engines with right-hand (RH) rear half-wall, part number (P/N) 0319 99 824 0, installed.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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