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Tue, May 19, 2015

AD: The Enstrom Helicopter Corporation

AD NUMBER: 2015-08-51

PRODUCT: Enstrom Helicopter Corporation (Enstrom) Model F-28A, 280, F-28C, F-28C-2, F-28C-2R, 280C, F-28F, F-28F-R, 280F, 280FX, and 480 helicopters.

ACTION: Final Rule; request for comments

SUMMARY: This AD was sent previously to all known U.S. owners and operators of these helicopters and supersedes Emergency AD (EAD) 2015-04-51, dated February 12, 2015. This AD requires inspecting certain main rotor spindles (spindles) for cracks and reporting the inspection results to the FAA.

This AD is prompted by a fatal accident and reports of spindles with cracks.

The actions specified in this AD are intended to detect a crack in a spindle and prevent loss of a main rotor blade and subsequent loss of control of the helicopter.

DATES: This AD becomes effective June 2, 2015 to all persons except those persons to whom it was made immediately effective by EAD 2015-08-51, issued on April 10, 2015, which contains the requirements of this AD. Comments on this AD must be received by `July 17, 2015.

FMI: AD

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