As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN DECK FIRE WARNING ALARM DURING FLIGHT, AFTER 5 HRS THE "FIRE M/D AFT" EICAS MESSAGE ILLUMINATED. DEPLOYED PAX OXYGEN MASKS BUT NOT USED. CHECKED M/D WITHOUT ANY FIRE OR SMOKE EVIDENT. FLT CONTINUED TO DESTINATION. AFTER ARRIVAL , TROUBLESHOOTING FOUND MD CARGO 15 LP B" MESSAGE ILLUMINATED. THREE SMOKE DETECTORS REPLACED. FOREIGN REGISTRATION: B18708.