AD Amdt-39-11037

Recurring final rule
Data completeness: 70%

Airworthiness Directives; Bell Helicopter Textron, Inc. Model 214ST Helicopters

AD Number
Amdt-39-11037
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 98-SW-27-AD
FR Citation
64 FR 7771

Applicability

TypeManufacturerModelDetails
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 damage in the tail rotor yoke assembly could lead to yoke failure, resulting in loss of the tail rotor 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

Reduce the never-exceed velocity (Vne) limitation until the tail rotor yoke assembly is inspected for fatigue damage and a redesigned yoke flapping stop is installed. Recurring periodic and special inspections to detect yoke overload occurrences are also required.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Within a specified time frame, as outlined in the AD.

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Bell Helicopter Textron, Inc. Model 214ST helicopters.

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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