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 detectors 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 automatic fire extinguishers. smoke in the cockpit was the problem on swiss air flight 111 after it took off from new