AD Amdt-39-10886
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Various | Airworthiness Directives; Bell Helicopter Textron, Inc. Model 214B, 214B-1, and 214ST Helicopters |
| aircraft | Bell | Helicopter Textron | Airworthiness Directives; Bell Helicopter Textron, Inc. Model 214B, 214B-1, and 214ST Helicopters |
Unsafe Condition
Cracks in thin-flanged attachment barrel nuts manufactured by Kaynar Technologies, Inc., which could lead to failure of main rotor grips, pitch horns, or tailboom assemblies 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 thin-flanged attachment barrel nuts for cracks or lubrication residue. Replace the barrel nuts and corresponding attaching bolts as necessary.
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, Inc. Model 214B, 214B-1, and 214ST helicopters with thin-flanged attachment barrel nuts manufactured by Kaynar Technologies, Inc., installed in main rotor grips, pitch horns, and tailboom assemblies.
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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