As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOWER CARGO SMOKE WARNING BELL ACTIVATED TWICE AT ALTITUDE FOR 1-2 SECONDS. WARNING LIGHTS AND HORN WENT OUT IMMEDIATELY WITHOUT ACTIVATING THE DISCHARGE BUTTON. BEGAN IMMEDIATE DESCENT INTO YMX. WARNING CAME ON CONTINUOUS AT 500 FT, PUSH BOTTLE DISCHARGE BUTTON. WARNING CAME ON AGAIN ON ROLLOUT. PUSHED BOTTLE 2 DISCHARGE BUTTON 1 SYSTEM TEST INDICATES NORMAL TEST WITH THE FORWARD FAULT LIGHT ILLUMINATED ON THE CARGO SMOKE PANEL. LIGHT AND HORN CONTINUED TO COME ON INTERMITTENTLY UNTIL BLOCK IN.