AD 2010-16-51
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Eurocopter | France Model SA330J | Airworthiness Directives; Eurocopter France Model SA330J Helicopters |
Unsafe Condition
Internal degradation of the bearings of the fan rotor shaft can cause interference between the fan rotor blade and the upper area of the guide vane bearing housing, leading to fan rotor blade separation and puncture holes in the transmission deck.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 10 hours time-in-service (TIS), inspect for a gap between the main gearbox (MGB) oil cooling fan assembly rotor blade and the upper section of the guide vane bearing housing using a 0.2 mm feeler gauge attached to a rigid rod. If the feeler gauge cannot be inserted, replace the two fan rotor shaft bearings with airworthy bearings. After replacement, reinspect to ensure sufficient clearance.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 10 hours time-in-service (TIS)
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Eurocopter France Model SA330J 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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