As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI FOR TAKEOFF SIC HAD NO BRAKES. PIC CHECKED NO BRAKES. USED EMERGENCY BRAKES TO SLOW DOWN. TRIED BRAKES AGAIN AND APPEARED NORMAL. CAME TO A STOP, SAW ANTISKID LIGHT ON. RAN THE CHECKLIST, RESET CIRCUIT BREAKER AND LIGHT STAYED ON. TURNED ANTISKID OFF. ITEM IS UNDER INVESTIGATION.