Airworthiness Directives; Airbus Helicopters

We propose to adopt a new airworthiness directive (AD) for Airbus Helicopters Model AS-365N2, AS 365 N3, EC 155B, EC155B1, SA- 365N1, and SA-366G1 helicopters. This proposed AD would require repetitive inspections of the aft fuselage outer skin. This proposed AD is prompted by several reports of aft fuselage outer skin disbonding. The actions of this proposed AD are intended to address an unsafe condition on these products.