As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW RECEIVED A HYD BLUE SYS LOW PRESS ECAM MSG WHILE ENROUTE. THE CREW DECLARED AN EMER AS A PRECAUTION. THE BLUE HYD SYS WAS FOUND LOW. SERVICED IAW AMM 12-12-29-611-001-A. NO LEAKS NOTED FOR ALL HYD SYS IAW AMM 29-00-00-790-001A. ACFT OK FOR SERVICE.