As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRE INDICATION ON LEFT ENGINE DURING LOW LEVEL CRUISE FLIGHT. NO SMOKE OR EVIDENCE OF FIRE OBSERVED BY FLIGHT CREW. FIRE WARNING ON PANEL ONLY. ENGINE SHUT DOWN AND SECURED BY FLIGHT CREW AS A PRECAUTION. LANDING UNEVENTFULL. UPON LANDING NO EVIDENCE OF FIRE WAS FOUND EITHER INSIDE ENGINE COMPARTMENT OR ON AIRFRAME/ENGINE NACELLE IN GENERAL. SUSPECT FIRE WARNING/DETECTION SYSTEM HAS INTERMITTENT FAILURE. CURRENTLY TESTING SYSTEM.