As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING RETURN FLIGHT, THE NR 1 ENG FIRE LIGHT ILLUMINATED. NO FIRE WAS DETECTED. FIVE MINUTES AFTER LANDING, THE FIRE LIGHT EXTINGUISHED. IT WAS FOUND THAT A WIRE WAS BROKEN AND WAS HELD ON BY SEVERAL STRANDS CAUSING A FALSE INDICATION.