As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED ABNORMAL RUDDER CONTROL MOVEMENTS. INVESTIGATION AND INSPECTION OF CONTROL SYSTEM DISCOVERED RUDDER ARM ATTACHMENTS TO TORQUE SHAFT. LOOSE DUE TO LOOSE AND WORN FASTENERS (RIVETS) UNIT WAS REPLACED WITH NEW TORQUE SHAFT ASSEMBLE.