As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXPERIENCED AT LEAST 3 UNCOMMANDED YAWS IN CLIMB AND CRUISE. SPEED AROUND 280 KIAS. SPOKE TO CREW IN FLIGHT, STATED THAT NOSE YAWED 5-10 DEGREE'S LEFT TO RIGHT AND RUDDER TRIM WENT FROM 0 TO 1.7 UNITS DURING THE OCCURRENCE. REPLACED RUDDER TRIM ACTUATOR. OP'S CHECKED RUDDER TRIM NORMAL. NO HYD LEAKS NOTED ON RUDDER ACTUATOR. REPLACED RUDDER TRIM ACTUATOR. OP'S CHECKED RUDDER TRIM NORMAL. NO HYD LEAKS NOTED ON RUDDER ACTUATOR.