BELL
BELL Model 427 helicopters [Docket No. FAA-2009-0227; Directorate Identifier 2007-SW-65-AD; Amendment 39-15978; AD 2009-15-15] – Remove the vertical fin and visually inspect the inboard and outboard surfaces of the fin where it attaches to the tail rotor gearbox support, looking for cracks, an...
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