What was found
ON TAKEOFF ROLL BRAKES HOT LIGHT ILLUMINATED ON MASTER WARNING PANEL (MWP). REJECTED TAKEOFF, COMPLETED ABNORMAL PROCEDURE. SPEED AT TIME OF RTO =<60 KIAS, A/C WEIGHT = 301,000, OAT = 23 DEGREES C, MAXIMUM BRAKE TEMPERATURE NR 6 260 DEGREES. CREW COMPLIED WITH REJECTED TAKEOFF (RTO) CRITERIA. BRAKE TEMPERATURES BELOW RTO CRITERIA OF 450 DEGREES PER A/B M/M 05-51-16. NR 6 MAIN BRAKE DRAGGING WITH PRESSURE SUPPLIED. DOES NOT DRAG WITHOUT PRESSURE. NR 6 MAIN BRAKE DEACTIVATED PER A300 MEL 32-42-09-01 CAT -C- AS DMI 16176. PLACARD INSTALLED, NR 6 MAIN BRAKE TRANSFERRED TO DMI LOG. REMOVED AND REPLACED NR 6 BRAKE PER 32-42-27. LEAK CHECKED OK. OPS CHECKED GOOD.