AD 67-11-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Schweizer Aircraft Corporation | 269A | Airworthiness Directives; Hughes Models 269A, 269A-1, 269A-2, and 269B Series Helicopters |
| aircraft | Schweizer Aircraft Corporation | 269A-1 | Airworthiness Directives; Hughes Models 269A, 269A-1, 269A-2, and 269B Series Helicopters |
| aircraft | Schweizer Aircraft Corporation | 269B | Airworthiness Directives; Hughes Models 269A, 269A-1, 269A-2, and 269B Series Helicopters |
Unsafe Condition
Malfunction of the main rotor gear drive assembly P/N 269A5175 caused by failure of the huck bolts P/N SALP-T10-7 that attach the main rotor drive shaft coupling to the ring gear carrier, and to detect damage from operation with the huck bolts installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove huck bolts P/N SALP-T10-7 and collars P/N 6LC-C10, inspect holes for deformity or damage, ream out-of-tolerance holes. Replace with Hi-Lok bolts P/N HL-20-PB-10-7, HL-20-PB-10-8, or HL-64-PB10-7 and collars P/N HL 87-10. Inspect the main rotor gear drive assembly for defects per Hughes Service Information Notice No. N-29 or FAA-approved revision, and maintain parts as specified if defects are found.
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Compliance Time
within the next 25 hours time in service
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Affected Aircraft
Schweizer Aircraft Corporation Models 269A, 269A-1, 269A-2, and 269B Series Helicopters equipped with Main Rotor Gear Drive Assembly P/N 269A5175 Bearing Serial Numbers 0001 to 1424 inclusive.
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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