As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HORIZONTAL STAB ACTUATOR CONTROL WAS REPORTED TO BE DEFECTIVE BY THE FLIGHT CREW. TROUBLESHOOTING DISCOVERED THAT THE HORIZONTAL STAB TRIM ACTUATOR CONTROLLER WAS DEFECTIVE, PN 6627401000-003. A REPAIRED UNIT WAS INSTALLED. OPERATIONS CHECKED OK.