As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PBI/MCO - FLT 5330 - DURING TAXI TO THE GATE IN MCO, CREW FOUND THE BRAKES WENT TO THE FLOOR. CREW WAS ABLE TO STOP AIRCRAFT, BUT ACTUATING FORCE WAS AFFECTED. MAINTENANCE FOUND AIR IN THE SYSTEM AND BLED THE BRAKES. OPS CHK GOOD. AIRCRAFT RETURNED TO SERVICE. (X)