What was found
IAH - FLIGHT 537, THE CREW REPORTED A BAGGAGE SMOKE INDICATION ON CLIMB. THE CARGO FIRE BOTTLES WERE DISCHARGED, AND THE AIRCRAFT RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT, OPERATIONALLY CHECKED THE BAGGAGE SMOKE DETECTORS WITH NO DEFECTS NOTED, REPLACED THE DISCHARGED FIRE BOTTLES, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.