As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB CREW REPORTED CAPTAIN PITCH TRIM AND MAIN PITCH TRIM INOP. CREW PERFORMED AIR RETURN WITHOUT INCIDENT. MX R & R HORIZ STABILZER CONTROL UNIT AND THE CAPTAIN'S YOKE PITCH TRIM SWITCH WITH OPS CHECKS SUCCESSFUL. ACFT WAS APPROVED FOR RETURN TO SERVICE.