What was found
REPEAT WRITE UP: MAIN CABIN DOOR LOCKING MECHANISM STUCK IN THE UNLOCKED POSITION AND WILL NOT MOVE TO THE LOCKED POSITION. FOUND LOWER FWD LATCH PIN OVER CENTER CAUSING HANDLES TO BE STUCK IN UNLOCKED POSITION. WAS ABLE TO ONLY PUSH LOWER LATCH PIN OVER CENTER PHYSICALLY.INSPECTED AND FOUND PIN OUT OF RIG, ADJUST PUSHROD (9) AND AFTER ADJUSTMENT WAS NOT ABLE TO PHYSICALLY PUSH PIN OVER CENTER. PERFORMED SEVERAL OPS CHECKS WITH ALL OPS CHECKS BEING SATISFACTORY. WORK PER MM CH 52-10-04.