AD 77-06-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Enstrom Helicopter Corporation, The | 280C | Airworthiness Directives; Enstrom Model F28C and 280C Helicopters |
| aircraft | Enstrom Helicopter Corporation, The | F-28C | Airworthiness Directives; Enstrom Model F28C and 280C Helicopters |
Unsafe Condition
Tail rotor assembly P/N 28-150000-3 with blade grip fittings P/N 28-150013-11 could fail, leading to loss of tail rotor control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove the tail rotor assembly P/N 28-150000-3 and replace it with an airworthy assembly using forged blade grip fittings P/N 28-150013-11. Return the removed assembly to Enstrom Helicopter Corporation.
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Compliance Time
Before further flight
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Affected Aircraft
Enstrom Model F28C (serial numbers 364, 367, 373, 374) and Model 280C (serial numbers 1007, 1020, 1060, 1062, 1065)
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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