What was found
MCI/DFW - FLT 0739 - EN ROUTE DURING CRUISE, NR 1 HYDRAULIC SYSTEM QUANTITY AND PRESSURE BEGAN TO DECREASE. AIRCRAFT PROCEEDED TO DFW AND ACCOMPLISHED ALTERNATE FLAP AND ALTERNATE LANDING GEAR EXTENSION, LANDING WITHOUT INCIDENT. REPLACED O-RING ON NR 1 HYDRAULIC PUMP PRESSURE DISCONNECT. PRECAUTIONARY REPLACED HYDRAULIC FILTERS AND SERVICED SYSTEM. ACCOMPLISHED LEAK AND GROUND CHECKS WITH NO DEFECTS FOUND. SYSTEM GROUND CHECKED NORMAL OPERATION. (X)