What was found
(CAN) THERE WAS SIGNIFICANT DROP IN HYDRAULIC QUANTITY FROM THE UTILITY SYSTEM IN-FLIGHT. PER THE CHECK LIST THE PUMPS WERE OFF LOADED. RE-ENGAGING THE PUMPS PRIOR TO LANDING, THE NR 2 UTILITY SYSTEM DID NOT COME BACK ON LINE. LOSS OF ALL HYDRAULIC SYSTEMS. NR 1 PRESSURE DURING LANDING ROLL RESULTED IN LOSS OF NOSE WHEEL STEERING. MAINTENANCE WAS CALLED AND THE AIRCRAFT WAS TOWED TO THE GATE. INSPECTION FOUND NR 2 UTILITY PUMP LEAKING BADLY FROM THE SHAFT SEAL. THE PUMP WAS REPLACED. THE SYSTEM REPLENISHED, CHECKED SERVICEABLE, AND THE AIRCRAFT RETURNED TO SERVICE.