AD 2020-14-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron Inc. | Various | Airworthiness Directives; Bell Textron Inc. (Type Certificate Previously Held by Bell Helicopter Textron Inc.) Helicopters |
| aircraft | Textron | Inc | Airworthiness Directives; Bell Textron Inc. (Type Certificate Previously Held by Bell Helicopter Textron Inc.) Helicopters |
| aircraft | Bell | Textron Inc | Airworthiness Directives; Bell Textron Inc. (Type Certificate Previously Held by Bell Helicopter Textron Inc.) Helicopters |
Unsafe Condition
The discovery that bolts have nonconforming external thread root radii. The unsafe condition, if not addressed, could result in the spindle separating from the yoke 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
Within 25 hours time-in-service, remove from service each bolt listed in paragraph (a) of this AD. After the effective date of this AD, do not install on any helicopter a bolt with a P/N and S/N listed in paragraph (a) of this AD.
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Compliance Time
Within 25 hours time-in-service
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Affected Aircraft
Bell Textron Inc. (Type Certificate Previously Held by Bell Helicopter Textron Inc.) Model 214ST helicopters, with a spindle to yoke bolt (bolt) part number (P/N) 214-010-262-103 and serial number (S/N) BH179163, BH179164, BH179169, BH179170, BH179171, BH179175, BH179176, BH179178, BH224783, BH224751, BH224756, BH224764, BH224765, BH383851, BH383853, BH383855, BH383856, BH383857, BH383858, BH383860, BH383861, BH383862, BH383864, BH383865, BH383868, BH383872, BH383873, BH383878, or BH383879 installed.
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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