As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3143 - HYD - HYD G RSVR LO LVL ECAM MSG DURING CRUISE AT FL380, PERFORMED ECAM/QRH PROCEDURE RESULTING IN GRAVITY EXTENSION OF LANDING GEAR. CORRECTIVE ACTION: FOUND GREEN EDP HYD PRESSURE SWITCH HOUSING LOOSE AND "O" RING BLOWN OUT. REPLACED PACKING PER A319 AMM 29-11.