Airworthiness Directives; Eurocopter France Model AS 332C, L, and L1 Helicopters

This amendment adopts a new airworthiness directive (AD), applicable to Eurocopter France Model AS 332C, L, and L1 helicopters that requires initial and repetitive inspections of the tail rotor shaft flapping hinge retainers (retainers) for cracks. This amendment is prompted by a report of high vibrations occurring on a helicopter while in service due to a cracked retainer. The actions specified by this AD are intended to detect cracks on the retainers that could lead to high tail rotor vibrations, loss of tail rotor control, and subsequent loss of control of the helicopter.