What was found
AIRCRAFT DEPARTED MIA AND, DURING CLIMB, THE HYD G SYS LOW PRESS MESSAGE WAS DISPLAYED. AS A PRECAUTIONARY MEASURE, THE FLIGHT CREW DECIDED TO RETURN TO MIA. AFTER AIRCRAFT N336QT RETURNED TO MIA, A HYDRAULIC FLUID LEAK WAS FOUND AT THE LH MAIN LANDING GEAR DOOR ACTUATOR. THE ACTUATOR WAS REMOVED AND REPLACED. OPERATIONAL TESTS WERE SATISFACTORILY COMPLETED AND THE AIRCRAFT WAS RETURNED TO SERVICE. REFERENCES: AIRBUS, AMM 32-31-35-000-801-A REV 4 AND AMM 32-31-35-400-801-A REV 4.