THE PILOT'S POOR JUDGEMENT IN ATTEMPTING FLIGHT AFTER THE AIRPLANE'S FUSELAGE WAS DAMAGED DURING A LOADING OPERATION. FACTORS WHICH CONTRIBUTED TO THE ACCIDENT WERE: THE OPERATOR'S FAILURE TO PROVIDE PROPER WEIGHT AND BALANCE DATA FOR THE AIRPLANE, THE PILOT'S FAILURE TO SUPERVISE THE LOADING OPERATION, AND HIS FAILURE TO ACCEPT THE SERVICES OF A MECHANIC TO INSPECT THE DAMAGE.