>> return to miami. >> what kind of problem are you having? >> smoke in the cabin. smoke in the cabin. >> reporter: the pilots head to the nearest airport. meanwhile, passengers are yelling about a fire. the aircraft rolls on its side and then crashes nose first into the florida everglades killing all 110 people on board. the ntsb determined the fire began in a cargo compartment. >> if we had a fire detection system in this compartment, the crew would have been afforded more time to get the plane on the ground. >> reporter: the faa took those words to heart and as a result revised standards for cargo requiring smoke detectors and automatic fire extinguishers in cargo holds. >> we are on a mayday. we're going down. >> reporter: fire was also a problem in 1983 when air canada flight 797 made an emergency landing at cincinnati's airport on the way from dallas to the toronto airport. it had a fire in the bathroom.