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 WHEN ENGINES NR 1 AND NR 3 REACHED 1.4 EPR. ABORTED TAKEOFF AND RETURNED AIRCRAFT TO THE RAMP. REMOVED AND REPLACED THE STABILIZER UPPER TAKEOFF WARNING SWITCH S532 IAW MM 312624. OPERATIONALLY CHECKS GOOD.