What was found
FLT 2161 FROM KDFW TO KMCI. AFTER TAKEOFF FROM DFW, THE LOWER AFT CARGO FIRE WARNING CAME ON. ALSO, THE NR 2 ENGINE DUCT OVERHEAT LIGHT ON IN FLIGHT. FOLLOW ALL CCIA AOM ABNORMAL PROCEDURES AND AIR TURNBACK TO DFW. AIRCRAFT LANDED WITHOUT INCIDENT. AIRCRAFT WAS THEN INSPECTED AND DEFERRED THE AFT CARGO COMPARTMENT FIRE DETECTION UNDER MEL 26-19 AND DEFERRED THE NR 2 ENGINE BLEED SYSTEM UNDER MEL 36-6-2. AIRCRAFT RETURNED TO SERVICE. CLEARED MEL 26-19 BY FUNCTIONALLY TESTING THE LOWER CARGO SMOKE DETECTION SYSTEM PER SECURAPLANE ST3000 MANUAL WITH NO MALFUNCTION FOUND. CHECKED ALL DETECTORS DB LEVELS IN SSV MODE, ALL DETECTORS LEVELS WERE ABOVE MINIMUM LEVELS. CLEARED MEL 36-6-2 BY REPLACING THE TEMPERA