As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, YAW DAMPER DISENGAGED AUTOMATICALLY IN FLIGHT. FAULT CODE 22203000. TRANSFERRED TO DMI 4502. TROUBLESHOT SYSTEM. FOUND RUDDER PCU AT FAULT. REMOVED AND REPLACED RUDDER PCU IAW AMM. OPERATION AND LEAK CHECKS NORMAL. RETURNED AIRCRAFT TO SERVICE. (K)