What was found
THE A HYDRAULIC SYSTEM WAS LOST AFTER TAKEOFF FROM IAH. THE AIRCRAFT WAS RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND A HOLE IN ELEVATOR LEFT PCU PRESSURE FLEX LINE. THE FLEX LINE WAS REMOVED AND REPLACED. IN ADDITION, THE NR 2 ENGINE DRIVEN HYDRAULIC PUMP WAS REMOVED AND REPLACED AS A PRECAUTIONARY MEASURE. THE HYDRAULIC SYSTEM WAS SERVICED TO FULL. OPERATIONAL CHECKS WERE GOOD WITH NO LEAKS NOTED.