What was found
AFTER TAKEOFF, ECAM MSG, BRAKES AUTO BRAKE FAULT & BRAKE RELEASED PRIOR TO LANDING, BRAKE TEMPS 95/95/80/55. AFTER LANDING & TAXING TO GATE, BRAKE TEMPS 415/55/395/295. BRAKE NR 2 APPEARS INOPERATIVE. REPLACED NR 2 TACHOMETER IAW AMM 32-42-57-000-01A. OPERATIONS CHECKED GOOD.