What was found
FLT NR 1036 - GSO - THE 'A' HYDRAULIC SYSTEM FLUID QUANTITY DROPPED TO ZERO WHILE EN ROUTE FROM BNA TO EWR. A MANUAL GEAR EXTENSION WAS PERFORMED AND THE AIRCRAFT WAS DIVERTED TO GSO WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE HYDRAULIC LINE IN LEFT WING ROOT CHAFED. THE HYDRAULIC LINE WAS REMOVED AND REPLACED. THE HYDRAULIC SYSTEM WAS SERVICED TO FULL AND LEAK CHECK WAS GOOD. (M)