As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW REPORTED THAT AFTER LANDING, THE HORIZONTAL STAB TRIM FAILED THE BACK DRIVE TEST. MX WAS NOTIFIED AND WAS ABLE TO DUPLICATE THE DISCREPANCY. R & R THE HORIZONTAL STABILIZER PRIMARY TRIM ACTUATOR, IAW MM 27-40-01. OPS CHECK FLIGHT WAS PERFORMED WITH NO DEFECTS NOTED. AIRCRAFT WAS THEN RETURNED TO SERVICE.