As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: AFTER EXTENDING GEAR ECAM DISPLAY BRAKES NORM BRAKE FAULT. ON SECOND GEAR EXTENSION THE FAULT CLEARED ITSELF. EMERGENCY DECLARED AS A PRECAUTION LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED #2 NORMAL-BRAKE PRESSURE TRANSDUCER PER AMM 32-42-21.