Airworthiness Directives; AlliedSignal Aerospace Bendix/King Model KSA 470 Autopilot Servo Actuators, Part Numbers 065-0076-10 Through 065-0076-15

This amendment adopts a new airworthiness directive (AD) that applies to certain AlliedSignal Aerospace Bendix/King Model KSA 470 autopilot servo actuators, part numbers 065-0076-10 through 065-0076- 15, that are installed on aircraft. This AD requires replacing the autopilot servo actuator with a modified actuator. This is the result of two reports of the affected autopilot servo actuators containing loose roll pins within the servo housing. Loose roll pins could fall out, become lodged in the output shaft clutch mechanism, and prevent this mechanism from disengaging. The actions specified by this AD are intended to prevent such an occurrence, which could result in increased effort by the pilot to control the aircraft and possible loss of control of the affected flight control axis.