As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOSS OF GREEN HYDRAULIC SYSTEM INFLIGHT. GREEN HYD RSVR LOW LEVEL ECAM. REPLACED GREEN SYSTEM RETURN FILTER ELEMENT AND YAW DAMPER SERVO ACTUATOR. RESERVICED HYDRAULIC SYSTEM. THE EVENT REOCCURED ON THE NEXT FLIGHT. AN INTERNAL HYD LEAK CHECK AND A VERIFICATION TEST FLIGHT WAS PERFORMED TO ISOLATE LEAK. NO LEAKS WERE FOUND NOR WAS THE PROBLEM DUPLICATED. RUDDER SERVO CONTROL (GREEN SYSTEM) AND THE T.H.S. HYDRAULIC MOTOR ACTUATOR WERE REPLACED PRECAUTIONARY.