As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAKEOFF CONFIGERATION WARNING HORN ACTIVATED DURING INITIAL THRUST APPLICATION. ABORTED TAKEOFF AND TRIED APPLYING POWER AGAIN ON TAXI WAY. HORN SOUNDED AGAIN. REMOVED AND REPLACED FLAP WARNING SWITCH PER M/M 31-26-12. TAKEOFF WARNING SYS TEST COMPLIED WITH PER M/M 31-26-0, NO DEFECTS NOTED.