As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON T/O ROLL AT APPROX 78 KTS GOT MASTER CAUTION AND BRAKES HOT MESSAGE ON ECAM. DISCONTINUED T/O. RTO-UPON INSP OF BRAKES SYSTEM FOUND NBR 1 BRAKE WILL NOT FREE SPIN. RELEASED HYD PRESSURE AND NOW SPINS FREELY. DEFER NBR 1 BRAKE PER MEL 32- 42-01A. M-PROCEDURE C/W BRAKE DISCONNECTED. PLACARD INSTALLED. R/R NO.1 BRAKE REF A319/320 AMM 32-42. M PROCEDURE REVERSED RMVD MCO PLACARD.