What was found
IN FLIGHT, RECEIVED GREEN HYDRAULIC NR 1 ENGINE PUMP LOW PRESSURE ECAM, SHOWS COMPLETE LOSS OF HYDRAULIC QUANTITY. DECLARED AN EMERGENCY INTO DESTINATION, LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. MAINTENANCE REPLACED RIGHT MAIN LANDING GEAR LOCKSTAY ACTUATOR IAW AMM 32-11-22. ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK IAW AMM 32-31-00.