As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT, THE NR 2 ENGINE FIRE WARNING LIGHT ILLUMINATED APPROXIMATELY 7 TIMES. FOUND DIRT, WATER IN NR 2 FLAME DETECTOR CONNECTOR. CLEANED AND SAFETIED CONNECTOR. PERFORMED FIRE DETECTION TEST. NO DEFECTS NOTED. FOUND SERVICEABLE.