As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED UNCOMMANDED YAW MOTION IN FLIGHT AND WHEN ACFT YAWS, YAW DAMPER 1 DISCONNECTS. CREW DECLARED AN EMERGENCY, DIVERTED AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED, R & R FLIGHT CONTROL COMPUTER (FCC) NR 2 CARD AND PERFORMED CHECKS IAW AMM. ACFT RELEASED FOR SERVICE.