AD 2000-02-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Canada Model 407 | Airworthiness Directives; Bell Helicopter Textron Canada Model 407 Helicopters |
| aircraft | Bell | Helicopter Textron Canada Model 407 | Airworthiness Directives; Bell Helicopter Textron Canada Model 407 Helicopters |
Unsafe Condition
Roughness in engine oil cooler blower shaft bearings can lead to bearing failure, loss of tail rotor drive, and a subsequent forced landing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect engine oil cooler blower shaft bearings for roughness at specified time intervals. Replace any rough bearings before further flight.
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
Bell Helicopter Textron Canada Model 407 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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