Southwest B733 near Columbus on Jul 22nd 2014, cargo smoke indication

A Southwest Airlines Boeing 737-300, registration N657SW performing flight WN-424 (callsign SWA-9015) from Baltimore,MD to Chicago Midway,IL (USA) with 49 passengers and 5 crew, was enroute at FL360 about 15nm northwest of Columbus,OH when the crew received a forward cargo smoke indication and decided to divert to Columbus for a safe landing. The aircraft vacated the runway, stopped on the taxiway, then the occupants were evacuated via slides. Attending emergency services found no trace of fire, heat or smoke.

A replacement Boeing 737-700 reached Chicago as flight WN-9015 with a delay of 3 hours.