As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) IN CRUISE DURING LIGHT CHOP, AIRCRAFT BEGAN TO EXPERIENCE A 10 DEGREE DUTCH ROLL ACCOMPANIED BY YAW, GPS INPUT, YAW DAMPER AND AUTOPILOT CONTROL WERE DEACTIVATED IN ATTEMPT TO REDUCE THE CONDITION. YAW DAMPER WAS THEN RE-ACTIVATED AND THE CONDITION SUBSIDED. PRECAUTIONARY RUDDER PCU SLIDE CHECK CARRIED OUT, NO FAULT FOUND. YAW DAMPER COUPLER REPLACED. PART TC: 29,003.