As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - CREW REPORTED PARKING BRAKE PRESSURE BLEED DOWN TO 2000 PSI IN FLIGHT. FLIGHT LANDED MIA WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. ACCOMPLISHED PARKING BRAKE HOLD BLEED DOWN TEST PER MM AND AIRCRAFT FAILED TEST. REPLACED TRANSMITTER. SYSTEM GROUND CHECK NORMAL OPERATION.