As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT REPORTED THAT ACFT AUTOPILOT WAS KICKING OFF LINE, AT SAME TIME YAW DAMPER GREEN LIGHT WOULD DISAPPEAR. AUTOPILOT RESET SEVERAL TIME DURING FLIGHT. THEN AUTOPILOT WOULD NOT REMAIN ENGAGED. RUDDER TRIM WOULD NOT MOVE LT IF COMMANDED BY RUDDER TRIM SWITCH. BUT WAS FUNCTIONING FINE TO THE RT. ACFT FLOWN TO BASE AUTOPILOT OFF. TRIM ADAPTER REPLACED AND PROBLEM DISAPPEARED. THIS TRIM ADAPTER SN KTA2810-1417 WAS REMOVED FROM AIRCRAFT.