What was found
ON GEAR RETRACTION, HYD SYSTEM A QUANTITY WENT TO ZERO. NUMEROUS SAFETY WIRES BROKEN IAW EMERG PROC. BOTH A PUMPS OFF IMMEDIATELY, HYD FLUID SHUTOFFS CLOSED 5 MINUTES LATER, NR 1 AND NR 2 ENGINES SHUT DOWN APPROX 45 MINUTES AFTER THAT. FOUND LEAKING RT GEAR ACTUATOR RETURN LINE, RUPTURED. REPLACED BOTH PRESSURE AND RETURN LINES ACTUATOR AND OPS CHECKED IAW MM32-32-002-4. IAW MM 29-11-00-1TROUBLE SHOOTING SUPPLY SHUTOFF FOR LONGER THAN 5 MINUTES, CHECKED AND REPLACED A-SYSTEM CASE DRAIN AND PRESSURE FILTERS. NO PROBLEMS FOUND. SERVICED HYDRAULIC SYSTEM AND RAN ENGINES AND CYCLED ALL FLIGHT CONTROLS AND FLAPS TO BLEED ALL AIR FROM SYSTEM. OK FOR SERVICE.