What was found
DURING THE BEGINNING OF TAKEOFF ROLL, TRANSFERRED CONTROL TO FIRST OFFICER AND AIRCRAFT SWERVED LEFT. NEITHER PILOT COULD NORMALLY STOP THE SWERVE, CAPTAIN TOOK CONTROL AND STOPPED THE AIRCRAFT. TAXIED BACK. MAINTENANCE INFORMED THE LEFT BRAKE LOCKED UP. REPLACED BSCU AND NR 1, 2, 5, & 6 WHEEL ASSYS AND 99GG RELAY.