What was found
PITCH TRIM KICKED OFF JUST PRIOR TO DESCENT AND TRIM WAS FROZEN T 1 DEGREE NOSE UP. CREW COULD NOT MOVE THE TRIM WHEEL ELECTRICALLY OR MANUALLY. AIRCRAFT LANDED WITHOUT INCIDENT. INSPECTED REVEALED THAT THE ROLL PIN HOLES ATTACHING THE TRIM WHEEL TO THE CROSSOVER TORQUE TUBE ASSEMBLY HAD WORN ON THE PILOTS TRIM WHEEL, ALLOWING THE INDICATOR INNER DRIVER TO RUB AGAINST THE BRONZE INNER BUSHING AND WELDING THE ASSEMBLY TOGETHER, NOT ALLOWING THE TRIM WHEEL TO MOVE. THIS AREA IS NOT COVERED BY THE INSPECTION PROGRAM. TRIM WHEEL IS NOT OPENED FOR INSPECTION. (M)