FAA 2020-17-05

Requires removing certain longitudinal trim actuators, lateral trim actuators, and yaw trim actuators, from service and prohibits installing such parts on MBB-BK 117 D-2 helicopters. This AD was prompted by the discovery that certain of these parts, which are certified for installation on MBB-BK 117 C-2 helicopters, were erroneously listed as eligible for installation on MBB-BK 117 D-2 helicopters.