As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: CREW REPORTED SYSTEM BLUE HYDRAULIC FAILURE UPON DESCENT ALONG WITH ECAM MESSAGES FOR HYDRAULIC BLUE RESERVOIR LOW LEVEL / HYDRAULIC BLUE SYSTEM LOW PRESSURE. NO EMERGENCY WAS DECLARED BUT PRIORITY WAS REQUESTED. THE AIRCRAFT LANDED SAFELY AT MIA WITHOUT FURTHER INCIDENT. MAINTENANCE SERVICED THE BLUE HYDRAULIC SYSTEM PER AMM 12-32-29 AND RETURNED THE AIRCRAFT BACK TO SERVICE.