As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE, AT FL310 WHEN ENGINE ANTI-ICE TURNED ON ENGINE FIRE WARNING SOUNDED. FOLLOWED PROCEDURES PER QRH. FIRE WARNING AGAIN SOUNDED SHUTDOWN NR 1 ENGINE, DISCHARGED BOTH FIRE BOTTLES. DIVERTED TO ROA. INSPECTION FOUND CORRODED FIRE LOOP. REPLACED FIRE LOOP AND BOTH FIRE BOTTLES PER MM 26-11-11. RAN ENGINES AND OPS CHECK GOOD. RAN ENGINES WITH ANTI-ICE ON OPS CHECK NORMAL.