As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI, LOST ALL BRAKES. THE ANTISKID WAS ARMED BUT BEGAN TO FLICKER A FAIL MESSAGE BUT NEVER STEADY. TURNING THE ANTISKID OFF, HAD FULL BRAKES. TROUBLESHOT BRAKE SYSTEM. INSPECTED AND CLEANED TRANSDUCERS. ACCESSED ANTI SKID CONTROL BOX AND CLEANED CONNECTOR. TAXI CHECKED ACFT AND FOUND BRAKE AND ANTI SKID SYSTEM TO FUNCTION NORMALLY AT THIS TIME, IAW HAWKER 400XP M/M 33-40-00.