As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT REQUIRES 4 UNITS LEFT RUDDER TRIM DURING CRUISE. L & R FUEL TANKS BALANCED. SUSPECT RUDDER TRIM ACTUATOR. REPLACED RUDDER TRIM ACTUATOR. ALL SYSTEMS CHECK NORMAL. PERFORM SINGLE HYDRAULIC SYSTEM CHECK OF EACH RUDDER POWER CONTROL ACTUATOR USING EACH HYDRAULIC SYSTEM IN SEQUENCE. TESTED FIVE MORE TIMES BEFORE HMV NO DISCREPANCIES.