AD 2023-01-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Turbomeca | Various | Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca, S.A.) Turboshaft Engines |
| aircraft | Aviat | Various | Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca, S.A.) Turboshaft Engines |
| engine | Safran | Helicopter | Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca, S.A.) Turboshaft Engines |
Unsafe Condition
Reports of false engine fire warnings due to a manufacturing non-compliance on the fire detectors, which caused a shift of the detection threshold towards temperature values that are lower than specified, potentially leading to a false engine fire warning.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replacing the affected fire detectors, as specified in EASA AD 2022-0256, and prohibiting the installation of affected fire detectors.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
All Safran Helicopter Engines, S.A. (Safran) Arriel 1C, Arriel 1C1, and Arriel 1C2 model turboshaft engines.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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