AD 2018-02-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The | Enstrom Helicopter Corporation | Airworthiness Directives; The Enstrom Helicopter Corporation Helicopters |
Unsafe Condition
Cracks in the main rotor spindle, which could result in loss of a main rotor blade 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
Conduct a one-time magnetic particle inspection (MPI) of the spindle for cracks, and then conduct an MPI every 500 hours time-in-service (TIS) until the spindle reaches its new life limit of 1,500 hours TIS.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 500 hours TIS
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Affected Aircraft
Enstrom Model F-28A, 280, F-28C, F-28C-2, F-28C-2R, 280C, F-28F, F-28F-R, 280F, 280FX, and 480 helicopters with a spindle part number (P/N) 28-14282-11 or 28-14282-13 installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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