AD 2021-05-08
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 |
| engine | Safran | Helicopter | Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca, S.A.) Turboshaft Engines |
Unsafe Condition
cracks were found on the soldered joints of torque conformation boxes, which could lead to engine in-flight shutdown, possibly resulting in reduced control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
performing initial and repetitive inspections of the resistance values of the torque conformation box and, depending on the results of the inspections, replacement of the torque conformation box.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours
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Affected Aircraft
all Safran Helicopter Engines, S.A. Arriel 2C, 2C1, 2S1, and 2S2 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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