What was found
THE CREW NOTED THAT HYDRAULIC NR 1 LOW QTY MESSAGE APPEARED ON EICAS WITH HYDRAULIC LEAK. (NOTE: THE FLIGHT WAS DIVERTED TO BNA. MAINTENANCE REMOVED AND REPLACED THE SUCTION AND PRESSURE HYDRAULIC LINES AT THE ENGINE DRIVEN HYDRAULIC PUMP, NR 1 ENGINE, SERVICED THE NR 1 HYDRAULIC SYSTEM, PERFORMED A OPERATIONAL CHECK AND A LEAK CHECK, NO DEFECTS NOTED AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.