As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAKE OFF WARNING HORN ON TAKE OFF, LESS THAN 30 KIAS WITH POWER LEVERS IN DETENT. ABORTED TAKEOFF. TAKE OFF WARN HORN CONFIGURATION TESTED GOOD ON TAXI OUT. COMPLIED WITH TAKEOFF ABORT CHECKLIST. CHECKED NORMAL, NO WARNINGS. COMPLIED WITH OPS CHECK IAW AMM 31-41-00-710-802. OPS CHECKED GOOD. RETURNED TO SERVICE.