What was found
THE RT HYDRAULIC QUANTITY WENT TO ZERO IN FLIGHT AND THE PRESSURE STARTED DROPPING. THE RIGHT ENGINE PUMP WAS TURNED OFF. THE PRESSURE STAYED AT ZERO AND RIGHT QUANTITY ROSE TO 6. THE GEAR AND FLAPS WERE LOWERED USING THE LEFT SYSTEM AND THE AIRCRAFT LANDED NORMALLY. MAINTENANCE FOUND THE NR 3 TIRE CAP HAD SEPARATED RESULTING IN DAMAGE TO FOUR HYDRAULIC LINES. THE NR 3 TIRE AND HYDRAULIC LINES WERE REMOVED AND REPLACED. THE NR 3 AND NR 4 BRAKE LIMITERS WHICH THE DAMAGED HYDRAULIC LINES WENT TO WERE REPLACED AS A PRECAUTIONARY MEASURE. THE HYDRAULIC SYSTEM WAS SERVICED AND LEAK CHECKS WERE GOOD.