As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRE BELL SOUNDED 3 TIMES DURING LEVEL FLIGHT, ACCOMPANIED WITH WARNING LIGHTS ON P-10 AND P-12 PANELS, AND MAIN DECK CARGO SMOKE DETECTOR NR 5 ON FE P-4 UPPER." TRANSFERRED TO DMI.328. REMOVED AND REPLACED NR 5 A AND B SMOKE DETECTORS AND SMOKE DETECTOR AMP NR 5, OPS CHK PER MM 26-14-02 AND PERFORMED SMOKE DETECTOR WIRING CONNECTION TEST, NO FAULTS FOUND PER MM 26-14-00.