AD 77-07-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Schweizer Aircraft Corporation | 269A | Airworthiness Directives; 77-07-01 Hughes Model 269 series Helicopters |
| aircraft | Schweizer Aircraft Corporation | 269A-1 | Airworthiness Directives; 77-07-01 Hughes Model 269 series Helicopters |
| aircraft | Schweizer Aircraft Corporation | 269B | Airworthiness Directives; 77-07-01 Hughes Model 269 series Helicopters |
| aircraft | Schweizer Aircraft Corporation | 269C | Airworthiness Directives; 77-07-01 Hughes Model 269 series Helicopters |
Unsafe Condition
Cracks in belt drive clutch aluminum actuating shaft and actuator attachment fixed end fittings can cause separation of the actuator attachment resulting in declutching of the main rotor.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct a daily visual check of the clutch actuator per Hughes Service Information Notice N-141.1. Perform a dye penetrant inspection within 100 hours time in service and every 100 hours thereafter. Replace defective clutch actuators before further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 10 days after the effective date of this AD, prior to the first flight each day; within the next 100 hours time in service after the effective date, and at intervals not to exceed 100 hours time in service thereafter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Schweizer Aircraft Corporation Model 269A, 269A-1, 269B, 269C helicopters with belt drive clutch linear actuator assemblies P/N DL1020-M81C (12V), DL1020-MS82C (24V), DL1020M48, and 269A4564.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.