As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. MILD UNCOMMANDED LEFT YAW AT 23500 FT IN CLIMB. NO RUDDER LIMIT ECAM. AT 27000 FT CRUISE, UNCOMMANDED RIGHT YAW TRIM FROM 0.2L TO 1.2R AND HELD. AUTO PILOT OFF AND RETURNED. AUTOPILOT ON RETURNED NORMAL. FOUND AFS TEST FAULTING RUDDER TRIM ACTUATOR. REPLACED ACTUATOR, IAW AMM 27-22-51. OPERATIONAL CHECK GOOD.