What was found
ON FLIGHT 3322 DURING THE DESCENT INTO DFW THE CREW RECEIVED A CARGO COMPARTMENT SMOKE DETECTION MESSAGE. THE CREW USED THE CARGO FIRE EXTINGUISHER SYSTEM. THE CREW DECLARED AN EMERGENCY AND LANDED AT DFW WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE FORWARD AND AFT CARGO SMOKE DETECTORS. REMOVED AND REPLACED BAGGAGE COMPARTMENT HIGH RATE FIRE EXTINGUISHER BOTTLE IAW AMM 26-23-01. REMOVED AND REPLACED BAGGAGE COMPARTMENT METERING FIRE EXTINGUISHER BOTTLE IAW AMM 26-23-01. THE OPERATIONAL CHECKS WERE GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.