As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF ROLL RECEIVED HIGH SPEED AURAL WARNING THROUGH 80 KNOTS. ABORTED TAKEOFF. PERFORMED INSULATION TEST ON ALL WIRES IN HIGH SPEED WARNING SYSTEM. WIRES CHECK GOOD. REMOVED AND REPLACED AURAL WARNING UNIT WITH SERVICEABLE UNIT IAW 31-53-02. HIGH SPEED WARNING ONLY SOUNDS AT PROPER SPEED. OPS CHECK GOOD. P/N: 80-0557-11, S/N ON: 0472, S/N OFF: 0405.