AD 2008-08-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Turbomeca | Makila 1A and 1A1 | Airworthiness Directives; Turbomeca Makila 1A and 1A1 Turboshaft Engines |
Unsafe Condition
Recent unexplained reversions of the ECU to the 65% N1 back-up mode due to temporary loss of N2 speed signal could lead to inability to continue safe flight, emergency autorotation landing, or an accident.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the selector-comparator board in the ECU with a board incorporating Turbomeca modification TU 250.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Turbomeca Makila 1A and 1A1 turboshaft engines.
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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