The Vigilante and the Air Traffic Controller

Air traffic controllers are meant to stop aircrafts from flying into one another... and if they fail, computer systems are installed to warn pilots of a coming collision. But sometimes these humans and computers give conflicting and confusing advice. Who to believe?

When a cargo plane and a Russian airliner collided in just such a situation, the authorities scrambled to work out how to prevent a repeat of the disaster... but a grieving father decided to seek revenge on those he held responsible. 

For a full list of sources for this episode, go to timharford.com.

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