As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE NORMAL BRAKES ARE BEING APPLIED, IF ANY AUTOBRAKE MODE IS SELECTED, EXPERIENCE A 3 SEC LOSS OF NORMAL BRAKES. IT IS AS IF THE ANTI SKID SYSTEM IS RELEASING THE BRAKES BUT THE ANTI SKID PANEL SHOWS NORMAL. REPLACED AUTOBRAKE CONTROL UNIT IAW MM 32-42-54. OPS CHECK GOOD AT THIS TIME.