As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE FLIGHT, NR1 ENG FIRE LIGHT AND TEE HANDLE ILLUMINATED INTERMITTENTLY AND THEN STEADY. ALL OTHER INDICATIONS NORMAL. NO SMOKE ODOR DETECTED BY CREW. CREW RETURNED TO BASE. MX CLEANED NR 1 ENG FWD FIRE DETECTOR PROBE CONNECTOR AND RESEATED. CYCLED BATTERY AND LIGHT EXTINGUISHED.