What was found
DURING TAKEOFF, AS THE ROLL BEGAN PLANE STARTED PULLING RT OF CENTERLINE. ADDED LT RUDDER TO STAY ON CENTERLINE. ON REACHING 50-60 KNTS, PLANE PULLED HARD RT & ABORTED TAKEOFF. ALL ENGINE PARAMETERS APPEARED NORMAL, & NO EICAS MESSAGES DISPLAYED. ON TAXI INTO RAMP AREA, LINEMEN ADVISED LT MAIN BRAKES SMOKING. ON INVESTIGATION, LT MAIN INBD BRAKE APPEARED STUCK IN ON POSITION. R & R NR 2 BRAKE ASSY IAW AMM 32-43-13, OPS & LEAK CHKD GOOD. R & R DEFECTIVE INBD BRAKE CONTROL VALVE IAW AMM 32-43-09 OPS & LEAK CHKD GOOD. TAXIED, AIRCRAFT DID NOT PULL TO RT.