What was found
(CAN) FLIGHT 8795 DIVERTED DUE TO NR 1 HYDRAULIC BEGAN TO DROP. CREW RECEIVED CAUTION MESSAGE FOR HYDRAULIC ISO VALVE AND INBOARD SPOILER. ON APPROACH FLAPS WOULD NOT LOWER SO THE CREW EXECUTED A MISSED APPROACH AND SET UP FOR A FLAPLESS LANDING. FLIGHT LANDED SAFELY. TROUBLESHOOTING AND FOUND THE NR 1 ENGINE HYDRAULIC PUMP LEAKING (EDP) FROM THE REAR BODY. EDP REPLACED AND SYSTEM TEST SERVICEABLE.