AD 2005-10-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Eurocopter | France Model AS355E, F, F1, F2, and N | Airworthiness Directives; Eurocopter France Model AS355E, F, F1, F2, and N Helicopters |
Unsafe Condition
Freewheel unit slipping in the combiner gearbox, resulting in engine overspeed and shutdown, due to the surface treatment applied to freewheel rollers in pre-MOD 077212 combiner gearboxes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace each pre-MOD 077212 combiner gearbox with a modified combiner gearbox by replacing the freewheel rollers in accordance with MOD 077212.
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
Eurocopter France Model AS355E, F, F1, F2, and N helicopters with a pre-MOD 077212 combiner gearbox that has 10 or less hours time-in-service installed, certificated in any category.
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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