Summary
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters (AH) Model EC130B4 helicopters. This proposed AD was prompted by reports of weaknesses in the locking mechanisms on the left-hand side swinging and sliding door. This proposed AD would require modifying the swinging door star support and sliding door star support stringer. This proposed AD would also prohibit installing an affected composite door on any helicopter unless certain requirements are met. The FAA is proposing this AD to address the unsafe condition on these products.