As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BLUE HYD QTY DROP TO RED DOT AND ECAM WARN ANNUNCIATED. RED TAB PROC FOLLOW PTU TURN ON FOR APPROACH AND LAND. FOUND BLUE SERVO CONTROL FILTER MODULE LEAK ON NR 1 ENG. REMOVED AND REPLACED O-RING ON FILTER BOWL REF MM 29-22-13, LEAK CK GOOD.