Only minutes after take off, a fire breaks out on Saudia Flight 163. The crew manages to land in Riyadh, but then the fire quickly engulfs the plane, with over 300 fatalities. It’s one of the deadliest aviation disasters of all time, and it’s up to investigators to determine both the cause of the fire—and why it spread so quickly once the plane was on the ground. Tune in to all new episodes of Air Crash Investigation on Mondays at 9pm, only on National Geographic UK. | National Geographic UK