AD 2005-25-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Turbomeca | Astazou XIV B and XIV H | Airworthiness Directives; Turbomeca Astazou XIV B and XIV H Turboshaft Engines |
Unsafe Condition
Failure of 2nd stage axial compressor wheel blades due to aerodynamic-induced stresses caused by improperly installed air intake noise suppressors.
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Required Actions
Before further flight, ensure proper installation of air intake noise suppressors. For engines operated with improperly installed air intake noise suppressors, remove the engine and perform an ultrasonic inspection of 2nd stage axial compressor wheel blades, replacing blades that fail inspection.
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Compliance Time
Within 50 flight hours or 6 months after the effective date of this AD, whichever occurs first.
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Affected Aircraft
Turbomeca Astazou XIV B and XIV H turboshaft engines that have operated with air intake noise suppressors, installed on, but not limited to, single-engine Aerospatiale AS319B 'Alouette III' and AS342J 'Gazelle' helicopters.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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