When a Boeing 707 Broke Apart in Mid-air Near Mt. Fuji

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At just before 2 o’clock in the afternoon on Saturday, March 5, 1966, British Overseas Airways Corporation Flight 911, took off from Tokyo’s Haneda International Airport. Bound for Hong Kong, the Boeing 707 broke apart in mid-air, just 15 minutes after departure. The crash left no survivors. The weather conditions were not an issue – at least, nothing obvious: there were no thunderstorms, no typhoons, there was no rain or snow. In fact, it was a sunny, clear, cloud-free day. It was so nice that the crew had requested a clearance so that they could stray from their intended route to Hong Kong, so that the captain could give the passengers a glorious view of the snow-capped and iconic Mt. Fuji. It was while viewing Mt. Fuji in this “sightseeing mode,” that Flight 911 met its demise.

What happened to Flight 911? What caused the mid-air break-up? Was it a bomb? Did the plane strike the mountainside? Was it a mechanical failure of some kind? Was the plane unsafe? Had the crew made a mistake? Or, despite the sunny skies, was the weather to blame. 

In this episode, the Radar Contact Lost team will examine what happened. We’ll look at the airplane, the pilot, the airline and Mt. Fuji itself; we’ll also take a dive into the phenomenon known as Clear Air Turbulence - not only what it is, but how, why and where it occurs and why, on this day over Japan, BOAC Flight 911 was ripped apart in midair.