What was found
THE CREW REPORTED A SMOKE INDICATION FROM THE CARGO BAY, THE QRH WAS FOLLOWED AND THE CARGO FIRE BOTTLES WERE DISCHARGED. THE ACFT LANDED WITHOUT INCIDENT WHERE MAINTENANCE INSPECTED THE ACFT, FOUND NO EVIDENCE OF SMOKE OR FIRE, OPERATIONALLY TESTED THE CARGO SMOKE DETECTION SYSTEM, REPLACED THE CARGO FIRE BOTTLES, PERFORMED ENGINE RUNS ALL WITH NO DEFECTS NOTED AND THE ACFT WAS APPROVED FOR RETURN TO SERVICE.