As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE TAKEOFF WAS SAFELY ABORTED AT APPROXIMATELY 100 KTS DUE TO THE TAKEOFF WARNING HORN SOUNDING. CREW MANEUVERED THE AIRCRAFT OVER TO THE ENGINE RUN-UP AREA AND CYCLED THE TRAILING EDGE FLAPS THROUGH ALL POSITIONS. WHEN FLAPS WERE EXTENDED THE FLIGHT CREW ADVANCED THE THROTTLES ONCE AGAIN BUT THE WARNING HORN STILL SOUNDED. MAINTENANCE REPLACED THE FLAP TAKEOFF WARNING SWITCH, FUNCTIONALLY CHECKED IT, AND RETURNED THE AIRCRAFT TO SERVICE.