As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AS THE POWER LEVERS WERE ADVANCED FOR TAKEOFF AT 1.2 EPR A WARNING HORN SOUNDED. THE TAKEOFF WAS REJECTED AND THE AIRCRAFT PROCEEDED BACK TO THE GATE WITHOUT INCIDENT. MAINTENANCE REPLACED THE FLAP/SLAT POSITION ACCESSORY UNIT P/N 65-52807-26 S/N D00235.