AD 2012-17-08
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Various | Airworthiness Directives; Bell Helicopter Textron, Inc. (Bell) Helicopters |
| aircraft | Bell | Helicopter Textron | Airworthiness Directives; Bell Helicopter Textron, Inc. (Bell) Helicopters |
Unsafe Condition
A crack in a yoke, which could result in failure of a yoke, and subsequent loss of control of the helicopter.
Required Actions
Inspect the yoke for cracks, and replace it if necessary. Operators may also replace the yoke with a new one made from stainless steel, which has improved design characteristics that address the corrosion problems.
Compliance Time
Before further flight
Affected Aircraft
Bell Model 204B, 205A, 205A-1, 205B, and 212 helicopters, with a main rotor yoke (yoke), part number (P/N) AAI-4011-102 (all dash numbers), ASI-4011-102 (all dash numbers), or 204-011-102 (all dash numbers), installed.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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