AD 2003-02-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Canada Limited Model 407 | Airworthiness Directives; Bell Helicopter Textron Canada Limited Model 407 Helicopters |
| aircraft | Bell | Helicopter Textron Canada Limited Model 407 | Airworthiness Directives; Bell Helicopter Textron Canada Limited Model 407 Helicopters |
Unsafe Condition
Cracks in the tailboom gearbox support castings could lead to failure of the casting, loss of the vertical fin and tail rotor, and subsequent loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect the tailboom gearbox support castings for cracks. Replace the tailboom assembly if a crack is found.
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 Limited 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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