As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
3/4/2020 AT 1408 - ON SHORT FINAL TO KOAJ ILS RWY05... THE #2 ENGINE "FIRE" LIGHT ILLUMINATED FOR ABOUT 15 SECONDS. NO VISIBLE SMOKE OR SECONDARY INDICATIONS WAS NOTED BY THE CREW. AIRCRAFT LANDED SAFELY AT THE BASE OF OPERATION WITH SUBSEQUENT INSPECTION CONFIRMED NO FIRE WAS PRESENT. TROUBLESHOOTING BY MAINTENANCE REVEALED TERMINAL CORROSION OF THE FIRE DETECTOR WAS AT FAULT FOR THE FALSE FIRE INDICATION.