As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RUDDER TRIM ROCKER SWITCH STUCK IN LEFT POSITION CAUSING FULL LEFT RUDDER TRIM DURING TAKEOFF ROLL. TAKEOFF ABORTED. AFTER MAXIMUM APPLICATION OF BRAKES, BRAKE LINE FAILED AND SUBSEQUENT BRAKE FIRE. SWITCH FAILURE WAS ABLE TO BE DUPLICATED APPROXIMATELY 1 OUT OF 10 ACTUATIONS OF SWITCH.