What was found
EMERGENCY DECLARED, DUE TO AN AUTO BRAKE FAULT, ECAM BRAKE RELEASED. FLIGHT LANDED WITHOUT FURTHER INCIDENT, WITH ONLY ONE BRAKE INOPERATIVE. AIRCRAFT WAS GROUNDED. MAINTENANCE FOUND THAT IAW TSM 32-42-00-810-817, THE CAUSE OF MESSAGE WAS WHEEL SPEED TACHOMETER. MAINTENANCE REPLACED THE NR 1 WHEEL SPEED TACHOMETER IAW AMM 32-42-57. PERFORMED SATISFACTORY OPERATIONAL CHECK.