What was found
UPON LANDING INITIALLY HAD BRAKE APPLICATION, THEN LOST BRAKE APPLICATION. RECEIVED 'BRAKE' WARNING ON MAP AS APPROACHED TOWARDS END OF RUNWAY. USED THE EMERGENCY BRAKE TO STOP. REPLACED ALL 4 MAIN WHEEL ASSEMBLIES ON MAIN LANDING GEAR. PERFORMED HIGH SPEED TAXI TO CHECK BRAKES WITH ANTI-SKID ON AND OFF. BRAKE OPERATIONAL CHECKS GOOD, SN OFF 0906, 0647, 2284.