As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ROLL, THE TAKEOFF WARNING HORN SOUNDED. ABORTED TAKEOFF. FOUND THE STABILIZER POSITION SWITCH S532 FROZEN. DEICED THE SWITCH AND CLEANED. PERFORMED A TAKEOFF WARNING SYSTEM CHECK WITH NO FAULTS NOTED. ALL SYSTEMS CHECK NORMAL AND OK FOR SERVICE.