What was found
THE A-SYSTEM HYDRAULIC QUANTITY DROPPED TO ZERO WHILE EN ROUTE. THE HYDRAULIC LOSS CHECKLIST WAS COMPLIED WITH AND THE AIRCRAFT WAS DIVERTED TO GSO WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE A-SYSTEM HYDRAULIC SUPPLY LINE IN THE RT REAR SPAR AREA WITH A HOLE CHAFED THROUGH IT. THE SUPPLY LINE WAS REMOVED AND REPLACED. IN ADDITION, THE HYDRAULIC LINE IT RUBBED AGAINST WAS REPLACED AS A PRECAUTIONARY MEASURE. LEAK CHECKS WERE GOOD.