As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, THE NR 4 ENGINE NACELLE TEMPERATURE INDICATED ''A'' FLUCTUATED INTO RED WITH ASSOCIATED FAULT LIGHT AND FIRE DETECTOR LIGHT ILLUMINATING ON ANNUNCIATOR PANEL. AIRCRAFT CONTINUED TO DESTINATION AND LANDED WITHOUT INCIDENT. REPLACED THE NR 4 ENGINE FIRE DETECTION CONTROL CARD A4. OPERATIONAL CHECK GOOD.