AD 71-21-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron, Inc. | 205A | Airworthiness Directives; Bell Models 205A and 205A-1 Helicopters |
| aircraft | Bell Helicopter Textron, Inc. | 205A-1 | Airworthiness Directives; Bell Models 205A and 205A-1 Helicopters |
Unsafe Condition
Fatigue crack in the vertical fin forward spar in the area of the first rivet hole above the tail fin and tail boom intersection at fuselage station 434 or fin station 70.3.
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Required Actions
Inspect for cracks in the vertical fin forward spar using visual or dye penetrant inspection methods. Remove and do not reinstall the rivet at fin station 70.3, clean the area, and protect the spar if no cracks are found. Replace the tail boom if cracks are found. Perform daily pre-flight checks after each inspection.
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Compliance Time
Within 25 hours time in service from the effective date for tail booms with 600+ hours, or before reaching 625 hours total time in service for those with less than 600 hours. Repetitive inspections required every 100 hours time in service.
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Affected Aircraft
Bell Models 205A and 205A-1 helicopters with tail boom assembly part numbers 205-032-802-1, -3, -5, -9, or -11, excluding specific serial ranges noted in paragraph (g).
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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