AD Amdt-39-10129
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Various | Airworthiness Directives; Bell Helicopter Textron, Inc. Model 214ST Helicopters |
| aircraft | Bell | Helicopter Textron | Airworthiness Directives; Bell Helicopter Textron, Inc. Model 214ST Helicopters |
Unsafe Condition
Fatigue failure of the pillow block bearing bolts due to unanticipated high number of takeoffs and external load lifts utilizing high-power settings in addition to time-in-service accrued under other operating conditions.
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Required Actions
Create a component history card or equivalent record using a Retirement Index Number (RIN) system; track accumulated RIN for the bearing bolts; establish maximum accumulated RIN to prevent failure.
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Compliance Time
Before further flight
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Affected Aircraft
Bell Helicopter Textron, Inc. Model 214ST helicopters
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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