As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 250 LGB-OAK, CREW DECLARED EMERGENCY AND AIR RETURN TO LGB DUE TO NR 2 BRAKE TEMP ECAM BRAKE TEMP RISING RAPIDLY ON CLIMBOUT. PERFORMED QRH AND ECAM TEMP DECREASED. FOUND NR 2 BRAKE WITH STRUCTURE FAILURE. REMOVED AND REPLACED NR 2 MLG BRAKE PER AMM 32-42-27. LEAK AND OPS CHECK GOOD.