Airworthiness Directives; Airbus Helicopters

Official abstract: The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters (AH) Model EC130B4 helicopters. This AD was prompted by reports of weaknesses in the locking mechanisms on the left-hand side swinging and sliding door. This AD requires modifying the swing door star support and sliding door star support stringer. This AD also prohibits installing an affected composite door on any helicopter unless certain requirements are met. The FAA is issuing this AD to address the unsafe condition on these products.