AD 96-06-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Enstrom Helicopter Corporation, The | 280 | Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F, and 280FX Helicopters |
| aircraft | Enstrom Helicopter Corporation, The | 280C | Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F, and 280FX Helicopters |
| aircraft | Enstrom Helicopter Corporation, The | 280F | Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F, and 280FX Helicopters |
| aircraft | Enstrom Helicopter Corporation, The | 280FX | Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F, and 280FX Helicopters |
| aircraft | Enstrom Helicopter Corporation, The | F-28 | Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F, and 280FX Helicopters |
| aircraft | Enstrom Helicopter Corporation, The | F-28A | Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F, and 280FX Helicopters |
| aircraft | Enstrom Helicopter Corporation, The | F-28C | Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F, and 280FX Helicopters |
| aircraft | Enstrom Helicopter Corporation, The | F-28C-2 | Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F, and 280FX Helicopters |
| aircraft | Enstrom Helicopter Corporation, The | F-28F | Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F, and 280FX Helicopters |
Unsafe Condition
Failure of the main rotor transmission clutch assembly, leading to loss of control of the main rotor system and subsequent loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform daily operational checks before first flight and after last flight, inspect the clutch assembly for bearing roughness, noise, lock-up, or improper oil level, and replace if necessary. Record compliance in aircraft logs.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 25 hours time-in-service after the effective date (April 23, 1996), and thereafter at intervals not to exceed 100 hours TIS.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Enstrom Helicopter Corporation Models F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F, and 280FX helicopters, certificated in any category.
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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