AD 82-24-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Enstrom Helicopter Corporation, The | 280 | Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Model F-28A, F-28C, F-28F, 280, 280C, and 280F Helicopters |
| aircraft | Enstrom Helicopter Corporation, The | 280C | Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Model F-28A, F-28C, F-28F, 280, 280C, and 280F Helicopters |
| aircraft | Enstrom Helicopter Corporation, The | 280F | Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Model F-28A, F-28C, F-28F, 280, 280C, and 280F Helicopters |
| aircraft | Enstrom Helicopter Corporation, The | F-28A | Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Model F-28A, F-28C, F-28F, 280, 280C, and 280F Helicopters |
| aircraft | Enstrom Helicopter Corporation, The | F-28C | Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Model F-28A, F-28C, F-28F, 280, 280C, and 280F Helicopters |
| aircraft | Enstrom Helicopter Corporation, The | F-28F | Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Model F-28A, F-28C, F-28F, 280, 280C, and 280F Helicopters |
Unsafe Condition
Possible in-flight drivebelt clutch disengagement due to binding of the clutch actuating cable caused by lubricant hardening from engine heat.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the drivebelt clutch mechanism at intervals not exceeding 100 hours' time in service to ensure proper rigging. Replace any binding clutch actuating cable with suitable airworthy parts before further flight. Lubricate the cable with Aero Shell 14 or equivalent. Install clutch cable heat shield P/N 28-16542-11 within 25 hours' time in service unless exempt. Install clutch engagement overcenter lock warning light kit P/N 28-19035-3 within 50 hours' time in service.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight after the effective date of this AD, and thereafter at intervals not to exceed 100 hours' time in service from the last inspection. Additionally, install heat shield within 25 hours' time in service and warning light kit within 50 hours' time in service after the effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Enstrom Helicopter Corporation Model F-28A, F-28C, F-28F, 280, 280C, and 280F helicopters certificated in all categories.
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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