Regulation & law · 15/09/2025

FAA Proposes Airworthiness Directive for Airbus Helicopters Deutschland GmbH Model MBB-BK 117 D-3 Helicopters

The FAA proposes a new airworthiness directive for Airbus Helicopters Deutschland GmbH Model MBB-BK 117 D-3 helicopters due to excessive vibrations caused by incorrect installation of the angular ball bearing of the control ring assembly. The directive would require a one-time inspection and prohibit the installation of affected swashplates unless certain requirements are met.