What was found
IN FLIGHT ECAM GREEN HYD SYS LO PRESS WARNING GREEN FLUID LEVEL ON OVERHEAD AND ECAM INDICATED TOTAL FLUID LOSS. COMPLIED WITH QRH. CRANKED GEAR. AT SOME TIME AFTER GEAR DOWN, FLUID GAGE INDICATED NORMAL. TUGGED IN BLUE AND YELLOW FLUID GAGES SHOWED OVERSERVICED BEFORE BLOCKOUT. MEM MX SAID AIR IN SYSTEM AND SHOULD CLEAR, IT DID. BLEED ALL 3 HYD SYSTEM PER A300-600 AMM 29-00-00-4. RESERVICED ALL 3 SYSTEMS PER A300-600 AMM 29-00-00-3 AND 12-12-29-0. RAN ENGINES PER FDX JRH AND OPERATED ALL FLIGHT CONTROLS NO ABNORMAL INDICATIONS IN FLIGHT DECK AT THIS TIME. REFER TO WRI 29-30-8090 FOR MOCC CONFERENCE CALL WITH MGMT.