As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 31000 FT DURING CRUISE, NOTICED UNCOMMANDED RUDDER DEFLECTION IN BOTH DIRECTIONS WITH AND WITHOUT THE AP CONNECTED. BOTH YAW DAMPERS WERE CONNECTED AND REMAINED CONNECTED INFLIGHT, YD 1 INOPERATIVE STATUS MESSAGE APPEARED ON GROUND AFTER LANDING. REPLACED NR 1 YAW DAMPER LINEAR ACTUATOR IAW AMM 22-22-01.