As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CARGO SMOKE DETECT 2 MESSAGE. AFTER ARRIVAL FOUND SMOKE DETECTOR 2 EA FAULT LIGHT ILLUMINATED. REMOVED AND REPLACED SMOKE DETECTOR FOR MAIN CARGO IN POSITION 2 EA OPS CHECKS GOOD AT THIS TIME. IAW AMM 26 14 01 IPC 26 16 01 54 / 190K.