AD Amdt-39-11343
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Eurocopter | France Model EC 120B | Airworthiness Directives; Eurocopter France Model EC 120B Helicopters |
Unsafe Condition
Cracks in the engine coupling tube caused by structural resonance, which could result in coupling failure, loss of engine drive, and a subsequent forced landing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the engine coupling tube for cracks at specified time intervals. Replace any cracked engine coupling tube with an airworthy engine coupling tube.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within specified time intervals as outlined in the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Eurocopter France Model EC 120B helicopters.
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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