What was found
MIA - FLT 919 - AFTER TAKEOFF MIA DURING CLIMB-OUT, SYSTEM 'A' QTY BEGAN TO DECREASE BELOW 2. ACCOMP LOSS OF SYSTEM A ABNORMAL PROCEDURE AND AIRCRAFT RETURNED TO MIA, LANDING WITHOUT INCIDENT. REPLACED HYDRAULIC FLAP POWER UNIT MOTOR. ALSO, REPLACED 1/2 HYD PUMP FILTERS. SERVICED HYDRAULIC SYSTEM AND ACCOMPLISHED LEAK CHECK WITH NO DEFECTS FOUND. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)