What was found
DURING FLIGHT, CREW REPORTED RIGHT HYDRAULIC FLUID QUANTITY LOSS AND ACCOMPLISHED QRH PROCEDURE SECURING RIGHT HYDRAULIC SYSTEM PUMPS. ON APPROACH, ATTEMPTED TO RE-PRESSURIZE RIGHT HYDRAULIC SYSTEM PER QRH AND THE SYSTEM FAILED TO PRESSURIZE. ACCOMPLISHED ALTERNATE GEAR EXTENSION, LANDED SAFELY, AND TOWED TO THE GATE. APU WAS NOT OPERATED. MAINTENANCE CONFIRMED LEAK AT THE RUDDER SHUT-OFF VALVE. THE RUDDER SHUT-OFF VALVE WAS REMOVED AND REPLACED, AIRCRAFT TAIL COMPARTMENT CLEANED AND MINI DUCT BURN OUT ACCOMPLISHED.