What was found
FLT NR XKYC202 - SVMC-KMIA - HYDRAULIC SYSTEM 'A' FAILURE EN ROUTE. ABNORMAL CHECKLIST USED. FLUID LEVEL INCREASED UPON NORMAL GEAR EXTENSION. LANDED AND TAXIED TO GATE UNDER OWN POWER. UPON MAINTENANCE INSPECTION FOUND NR 1 SLAT ACTUATOR LEAKING AT RETRACT SWIVEL. REPLACED SLAT ACTUATOR SWIVEL SEALS, BOTH NR 1 AND NR 2 ENGINE DRIVEN HYDRAULIC PUMPS AND FILTERS. SERVICED AND BLED HYDRAULIC SYSTEMS. LEAK CHECK OK. JACKED AIRCRAFT, CYCLED LANDING GEAR SEVERAL TIMES. AIRCRAFT RETURNED TO SERVICE.