AD 62-03-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Hiller Aviation | UH-12A | Airworthiness Directives; Hiller Model UH-12A and UH-12B Helicopters |
| aircraft | Hiller Aviation | UH-12B | Airworthiness Directives; Hiller Model UH-12A and UH-12B Helicopters |
Unsafe Condition
Failure of the tail rotor drive slip joints can result in loss of power to the tail rotor.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace CR-10 or CR-10T type rollers of both fore and aft slip joints with the improved Torrington CR-10U type rollers.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 150 hours' time in service after the effective date of this AD
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Affected Aircraft
Hiller Model UH-12A and UH-12B Helicopters, including Assembly Nos. 24500-9, -10, 24565, and 24544.
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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