As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAKEOFF WARNING HORN SOUNDED DURING TAKEOFF ROLL WHEN POWER LEVERS ADVANCED. TAKEOFF ABORTED. R & R FLAP POSITION INDICATOR AND PERFORMED OPS CHECK IAW MM 27-53-05. OPS CHECKED GOOD. PERFORMED TAKEOFF WARNING SYS CHECK, OPS CHECKED GOOD.