WASHINGTON, May 9 -- Federal Aviation Administration has issued a proposed rule called: Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters.

The proposed rule was published in the Federal Register on May 9 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 certain Airbus Helicopters Deutschland GmbH (AHD) Model MBB-BK 117 D-3 helicopters. This proposed AD was prompted by reports of momentary direct current (DC) power interruption in flight of both essential busses. This proposed AD would require revising the existing rotorcraft flight manual (RFM) for your helicopter, as specified...