As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT INTO MIAMI, NR 1 ENGINE FIRE WARNING ILLUMINATED MOMENTARILY AND CEASED. LANDED MIAMI WITHOUT INCIDENT. INSPECTION REVEALED NO EVIDENCE OF FIRE OR OVERHEAT CONDITION. RAN ENGINE, CHECKED FIRE WARNING AND PNEUMATIC SYSTEM AND COULD NOT DUPLICATE REPORTED CONDITION. AIRCRAFT RETURNED TO SERVICE.