AD 2011-24-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Turbomeca S.A. Makila 1A2 Turboshaft Engines |
| engine | Turbomeca | S | Airworthiness Directives; Turbomeca S.A. Makila 1A2 Turboshaft Engines |
Unsafe Condition
An N2 (power turbine speed) sensor harness wire crimping discrepancy can lead to inadvertent activation of the 65% N1 back up control mode, resulting in significant power loss on one or more engines, potentially causing an emergency landing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace affected N2 sensor harnesses with serviceable parts. Prohibit installation of non-serviceable N2 sensor harnesses on engines.
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Compliance Time
Within 12 months of effective date
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Affected Aircraft
Turbomeca S.A. Makila 1A2 turboshaft engines, all serial numbers. Specifically affected are N2 sensor Part Number 0 301 52 001 0 with Serial Numbers between S/N 242 and S/N 339 inclusive.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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