BELL Model 206L, L-1, L-3 and L-4 helicopters [Docket No. FAA-2013-0525; Directorate Identifier 2011-SW-063-AD; Amendment 39-17730; AD 2014-02-02] – requires measuring each main rotor (M/R) blade spar space to determine whether it is oversized and reidentifying the M/R blade and reducing the life...

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