What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO LAX DUE TO THE FLIGHT CREW REPORTING A GREEN HYDRAULIC RESERVOIR LOW LEVEL ECAM WARNING ALONG WITH A COMPLETE LOSS OF THE GREEN HYDRAILIC SYSTEM FLUID AFTER GEAR RETRACTION ON TAKEOFF. THE AIRCRAFT LANDED SAFELY AT LAX AND TAXIED TO THE GATE UNDER ITS OWN POWER. MAINTENANCE FOUND THE MAIN LANDING GEAR LOCK STAY ACTUATOR HOSES DAMAGED AND REPLACED THEM. A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED.