As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CENTER FIRE SENSORS ON MAIN DECK INDICATED FIRE 9 HRS INTO FLT. VISUAL INSPECTION REVEALED NO FIRE. CB'S PULLED TO SILENCE ALARM FOR DURATION OF FLT & PERFORMED PERIODIC VISUAL FIRE INSPECTION. CLEANED & DRIED MAIN DECK SMOKE DETECTOR. (DETECTOR CONTAMINATED DUE TO HORSE CHARTER). PERFORMED FIRE SENSOR BITE TEST. ALL PASSED. OK FOR CONTINUED SERVICE.