As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT REPORT): OPERATION OF RUDDER TRIM CAUSED TRIM MOTOR FULL DEFLECTION RIGHT. YAW CORRECTED WITH RUDDER INPUT - ABLE TO RE-CENTRE TRIM, BUT SUBSEQUENT OPERATION OF TRIM CAUSED FAULT TO RETURN. (INITIAL IDENTIFICATION OF FAULT HINDERED BY DEFECTIVE RUDDER TRIM INDICATOR) (ADD - UNDER MEL).EMERGENCY RUDDER TRIM SWITCH.