AD 99-02-17
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron, Inc. | 214B | Airworthiness Directives; Bell Helicopter Textron, Inc. Model 214B and 214B-1 Helicopters |
| aircraft | Bell Helicopter Textron, Inc. | 214B-1 | Airworthiness Directives; Bell Helicopter Textron, Inc. Model 214B and 214B-1 Helicopters |
Unsafe Condition
Fatigue failure of the tail rotor yoke that could result in loss of the tail rotor and subsequent loss of control of the helicopter.
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Required Actions
Review historical records for incidents imposing bending loads on the yoke, install a reduced airspeed placard and RFM limitation, replace yoke assembly within 180 days with a zero-hours TIS or inspected yoke, install frangible tail rotor flapping stop part number 214-011-809-109, and conduct repetitive 25-hour TIS inspections plus inspections after hard landings or power incidents.
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Compliance Time
Before further flight (for some actions) and within 180 days (for others).
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Affected Aircraft
Bell Helicopter Textron, Inc. Model 214B and 214B-1 helicopters, serial numbers 28001 and higher.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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