AD 81-02-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron, Inc. | 214B | Airworthiness Directives; BELL Models 214B and 214B-1 Helicopters |
| aircraft | Bell Helicopter Textron, Inc. | 214B-1 | Airworthiness Directives; BELL Models 214B and 214B-1 Helicopters |
Unsafe Condition
Clutch failure resulting in loss of engine power to the main rotor.
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Required Actions
Remove P/N 214-040-021-001 clutch assemblies and install P/N 214-040-021-103 assemblies according to specified schedules. Compliance must be accomplished within 10 hours' time in service for assemblies with 290+ hours or unknown time, and prior to 300 hours' time in service for those with less than 290 hours.
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Compliance Time
Within the next 10 hours' time in service for P/N 214-040-021-001 assemblies with 290 or more hours' time in service or unknown time on the effective date. Prior to attaining 300 hours' time in service for those with less than 290 hours' time in service on the effective date.
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Affected Aircraft
Bell Helicopter Textron, Inc. Models 214B and 214B-1 helicopters, serial numbers up to and including S/N 28049.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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