AD 2016-12-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Various | Airworthiness Directives; Airbus Helicopters (Previously Eurocopter France) Helicopters |
Unsafe Condition
Excessive loading on the engine-to-main gearbox coupling tube due to certain engine mount parts can lead to binding, increased wear, and potential coupling tube 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
Remove certain engine mount parts from service, measure the height of the engine mounting base, replace the engine mount if the height exceeds 10.5 millimeters, inspect the flared coupling for cracks, and replace any cracked coupling.
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
Airbus Helicopters (formerly Eurocopter France) Model EC120B helicopters with specific engine mount parts listed in Eurocopter Alert Service Bulletin ASB No. 04A005 and engine coupling tube part numbers C631A1002101 and C631A1101101.
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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