As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING LEVEL FLIGHT, NR 1 ENGINE FIRE T-HANDLE ILLUMINATED. PERFORMED TIGHT TURN, LOOKING FOR INDICATION OF SMOKE. NOTED NO SMOKE, ALL ENGINE INDICATIONS WERE NORMAL. DURING TROUBLESHOOTING, FOUND ENGINE NR 1 FLAME DETECTOR BAD. REPLACED FLAME DETECTOR. OPS CHECKED GOOD.