EUROCOPTER FRANCE Model EC 155B, EC155B1, SA-365N1, AS-365N2 and AS 365 N3 helicopters [Docket No. FAA-2012-1018; Directorate Identifier 2011-SW-052-AD; Amendment 39-17204; AD 2012-19-09] – requires visually inspecting the tail rotor hub (TRH) for a crack and removing the TRH if a crack exists. This AD is prompted by reports of cracks on two TRHs. These actions are intended to prevent the tail rotor from jamming, which could lead to reduced or loss of control of the helicopter. FAA ...


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