110 people on board. the ntsb determined the fire began in a cargo compartment. >> if we had fire detection system in this cargo compartment, the crew would have afforded more time to get the airplane back on the ground. >> reporter: the faa took those words to heart, revising standards for cargo, requiring smoke detectorerss and automatic fire extinguishers in cargo holds. >> may day. going down. >> reporter: fire was a problem in 1983 when air canada flight 797 made an emergency landing at cincinnati's airport. it had a fire in the bathroom. >> we had a fire in the back washroom and it's filling up with smoke right now. >> reporter: incredibly the plane landed safely but half the passengers and crew died because they couldn't exit the plane fast enough. that gave rise to new fire safety standards, including bathroom smoke detectors and