As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - FLIGHT 00310 - DURING APPROACH AND AIRCRAFT AT FULL LANDING CONFIGURATION, THE CREW RECEIVED A MASTER CAUTION. CREW ACKNOWLEDGED THE MASTER CAUTION AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT AND REPLACED THE ELEVATOR TRIM ACTUATOR. OPERATIONAL CHECKS WERE GOOD AND THE AIRCRAFT WAS RETURNED TO SERVICE.