As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AN INTERMITTENT YAW DAMPENER FAULT, INDICATING THAT THE AUTO PILOT WOULD TRIP OFF WHILE IN TURBULENCE. TROUBLESHOOTING FOUND THE RUDDER SERVO PN 622-6717-104 SN 1MNXJ TO BE WEAK. THIS UNIT WAS REMOVED FROM SERVICE & AN OVERHAULED UNIT WAS INSTALLED. OPERATIONS CHECKED OK.