As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - FLIGHT 2184 - THE FLIGHT RETURNED TO FIELD WHEN THE CREW WAS UNABLE TO TRIM THE RUDDER TO THE RIGHT. MAINTENANCE INSPECTED THE AIRCRAFT AND REPLACED THE AILERON/RUDDER TRIM PANEL. OPERATIONAL CHECKS WERE GOOD AND THE AIRCRAFT WAS RETURNED TO SERVICE.