What was found
DSM - FLT 4074 - UPON DESCENT, CARGO SMOKE WARNING ILLUMINATED. AS A PRECAUTION, CREW ACTIVATED CARGO FIRE EXTINGUISHERS. AIRCRAFT LANDED SAFELY, PASSENGERS DEPLANED NORMALLY. VERIFIED EVENT AS A FALSE WARNING, AS THERE WAS NO EVIDENCE OF SMOKE OR FIRE. OPENED MEL ON THE CARGO SMOKE INDICATION AND THE CARGO FIRE EXTINGUISHER SYSTEM. AIRCRAFT RETURNED TO SERVICE. NOTE: AWAITING FURTHER CORRECTIVE ACTION, TO BE FILED UPON COMPLETION. (X)