After an emergency landing because of an in-flight fire, twenty-three passengers aboard <a href="https://en.wikipedia.org/wiki/Air_Canada_Flight_797" id="mw6Q" rel="mw:WikiLink" title="Air Canada Flight 797">Air Canada Flight 797</a> are killed when a <a href="https://en.wikipedia.org/wiki/Flashover" id="mw6g" rel="mw:WikiLink" title="Flashover">flashover</a> occurs as the plane's doors open. Because of this incident, numerous new safety regulations are put in place.