As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERSION TO ICT DUE TO MAIN DECK CARGO SMOKE DETECTOR NR 1 FIRE WARNING CAME ON AFTER REACHING CRUISE ALTITUDE (FL410). INSPECTED AREA NO SIGNS OF SMOKE OR FUMES. DIVERTED TO ICT AT COMPANY REQUEST AS A PRECAUTION. LIGHT EXTINGUISHED AFTER LANDING. THE ABOVE ITEM HAS BEEN TRANSFERRED FROM LOG PAD 0159 PAGE NUMBER 367269.