What was found
WHILE INVESTIGATING A TOILET DUMP ITEM, NOTICED THE DUMP CHUTE CHAFING ON THE HORIZONTAL STABILIZER TORQUE TUBE SHAFT LOCATED UNDER THE LAVATORY FLOOR. REMOVED THE SHAFT AND FOUND DAMAGE TO BE OUT OF LIMITS. REPLACED THE TORQUE TUBE SHAFT WITH A NEW UNIT AND REPOSITIONED THE LAVATORY DUMP CHUTE FOR PROPER CLEARANCE. OPERATIONAL CHECK OF SYSTEM ACCOMPLISHED. ALL WORK DONE IAW THE MM. AIRCRAFT RELEASED TO SERVICE. (X)