Eurocopter Deutschland GmbH Issues Airworthiness Directive for EC135 Helicopters

Summary

Eurocopter Deutschland GmbH has issued an airworthiness directive for its Model EC135 P1 and EC135 T1 helicopters, requiring pilots to take specific actions in response to a thump-like sound and unusual vibration during flight, and to inspect and replace certain main rotor drive torque strut assemblies at specified intervals.