What was found
DURING CLIMB-OUT FROM KTOL, THE CREW NOTICED HYDRAULIC QUANITY STARTED DROPPING RAPIDLY TOWARD EMPTY. THE CREW RETURNED TO KTOL AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND PRESSURE FLEX LINE LEAKING AT NUMBER TWO ENGINE DRIVEN HYDRAULIC PUMP. MAINTENANCE TIGHTEND THE FLEX LINE, RESERVICED HYDRAULIC SYSTEM, OPERATIONAL AND LEAK CHECK WAS GOOD, IAW DACO DC8 MAINTENANCE MANUAL 29-10-12 AND ATI ERH 70.01. AIRCRAFT RETURNED TO SERVICE.