As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE EDFH NR 5 MAIN DECK SMOKE DETECTOR ILLUMINATED. EMERGENCY PROCEDURES COMPLIED WITH. LANDED AT CYQX. CARGO AREA INSPECTED NO EVIDENCE OF SMOKE OR FIRE. NR 5 SMOKE DETECTOR INTAKE LINE FOUND LOOSE FITTING. TORQUED AND OPERATIONAL TEST OF MAIN DECK CARGO SYSTEM PERFORMED PER AMM 26-14-00 OPERATION NORMAL.