WASHINGTON, April 25 -- Federal Aviation Administration has issued a proposed rule called: Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters.

The proposed rule was published in the Federal Register on April 25 by Steven W. Thompson, Acting Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service.

Summary: The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH (AHD) Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, EC635T2+, and EC135T3 helicopters. This proposed AD was prompted by reports of ruptured and deformed flexible couplings. This proposed AD would require inspecting the axial displacement of the tail rot...