AD 79-10-06 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Enstrom Helicopter Corporation, The | 280C | Airworthiness Directives; Enstrom Model F-28C and 280C Helicopters |
| aircraft | Enstrom Helicopter Corporation, The | F-28C | Airworthiness Directives; Enstrom Model F-28C and 280C Helicopters |
Unsafe Condition
Tail rotor blade grip cracks can cause tail rotor failures.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually check tail rotor blade grips for cracks using a 10X glass before each flight. Perform dye penetrant inspection within 50 hours' time in service after the AD's effective date. Replace cracked grips with serviceable units (P/N 28-150013-1 or 28-150044-1) following Enstrom Service Directive 0048 or 0048 Rev A. Retorque close tolerance bolts with lubriplate compound.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to next flight after receipt of this AD and prior to each flight thereafter; prior to the next 50 hours' time in service after the effective date of this AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Enstrom Helicopter Corporation Model F-28C and 280C helicopters.
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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