AD 74-23-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron, Inc. | 204B | Airworthiness Directives; Bell Model 204B and 205A-1 Helicopters |
| aircraft | Bell Helicopter Textron, Inc. | 205A-1 | Airworthiness Directives; Bell Model 204B and 205A-1 Helicopters |
Unsafe Condition
Cracks in the tail rotor pitch change link segments could lead to failure of the tail rotor pitch change chains.
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Required Actions
Inspect tail rotor pitch change chains (P/N 205-001-721-1 and 205-001-748-1) for cracks at intervals not exceeding 25 hours time in service. Replace cracked chains before further flight. Replace specific chains based on manufacturing dates and total time in service as outlined in the directive.
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Compliance Time
Within five hours time in service after June 7, 1974, and thereafter at intervals not to exceed 25 hours time in service. For replacement actions, comply within specified timeframes based on total time in service as detailed.
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Affected Aircraft
Bell Model 204B and 205A-1 helicopters certificated in all categories.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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