What was found
KGSO - ON TAXI TO GATE, A-SYSTEM HYDRAULICS DEPLEATED. ISOLATED A AND B HYDRAULIC SYSTEMS. TAXIED TO GATE UNEVENTFUL, FOUND NR 3 L/E SLAT ACTUATOR END CAP SEPARATED FROM ACTUATOR HOUSING. FATIGUE CRACK SUSPECTED. REMOVED AND REPLACED ACTUATOR. OPS CHECK OK IAW MM 27-81-2. ACTUATOR IS ORIGINAL DELIVERY WITH AIRCRAFT. HISTORICAL RECORDS TO BE SEARCHED FOR OVERHAUL AGENCY. AIRCRAFT RETURNED TO SERVICE. (X)