AD Amdt-39-12555
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Various | Airworthiness Directives; Bell Helicopter Textron, Inc. Model 206A, 206B, 206A-1, 206B-1, 206L, and 206L-1 Helicopters |
| aircraft | Bell | Helicopter Textron | Airworthiness Directives; Bell Helicopter Textron, Inc. Model 206A, 206B, 206A-1, 206B-1, 206L, and 206L-1 Helicopters |
Unsafe Condition
Failure of the main rotor trunnion due to fatigue cracks 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
Retire main rotor trunnions based on part numbers and hours time-in-service (TIS): P/N 206-011-120-001 at 1200 hours TIS, P/N 206-010-104-3 and 206-011-113-001 at 2400 hours TIS, and P/N 206-011-113-103 at 4800 hours TIS. Retirement must occur within 100 hours TIS if exceeded, or before reaching specified limits.
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Compliance Time
Within 100 hours TIS if exceeded, or before reaching specified TIS limits (1200, 2400, or 4800 hours).
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Affected Aircraft
Bell Helicopter Textron Model 206A, 206B, 206A-1, 206B-1, 206L, and 206L-1 helicopters with specific main rotor trunnion part numbers (206-010-104-3, 206-011-113-001, 206-011-120-001, or 206-011-113-103) installed.
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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