AD 2002-06-52
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
Failure of an oil cooler blower bearing, leading to 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
Replace certain bearings on a one-time basis. Add a limitation and caution to the rotorcraft flight manual (RFM) before further flight. At specified intervals, inspect, replace, and lubricate certain oil cooler blower bearings.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight for RFM updates; within specified intervals for inspections and maintenance.
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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