As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LANDING, FLIGHT CREW ADVISED MX THAT THE HORIZONTAL STABILIZER TRIM ACTUATOR FAILED THE "BACK DRIVE" TEST. MX TROUBLESHOT THE DISCREPANCY AND INSTALLED AN OVERHAULED HORIZONTAL STABILIZER ACTUATOR IAW MM 27-40-01; PERFORMED LEAK AND OP'S CHECK WITH NO DEFECTS NOTED. ACFT THEN PERFORMED AN OPS CHECK FLIGHT WITH NO DEFECTS NOTED. ACFT WAS THEN RETURNED BACK TO SERVICE.