What was found
(CAN) ON APPROACH STAB TRIM REPORTED TO HAVE JAMMED.THE FLT LANDED W/O EVENT.RECTIFICATION UPON LANDING ENGINEER CONTACTED.THE STAB TRIM SYS BRAKE FOUND APPLIED.STAB TRIM SYS THEN FUNCTIONED IN BOTH DIRECTIONS W/O FAULT. TRIM SYS THEN INSPECTED PER AMM WITH NO FAULTS FOUND. A/C FLOWN TO YEA WITHOUT FURTHER FAULT. UPON INSPECTING AUTOPILOT TRIM MOTOR, IT APPEARED TO RUN ROUGH. AUTOPILOT TRIM ACTUATOR REPLACED. MAIN DRIVE MOTOR ALSO REPLACED FOR TROUBLESHOOTING.