David Warren invented the "black box" flight voice recorder used on airplanes to reconstruct flight information after a crash. He came up with the idea after investigating the world's first commercial airline crash in 1953.
He thought it would be useful for investigators to have voice recordings of the cockpit crew in the event of a crash. Although he built his prototype in 1956, it took several years before they were installed in commercial airliners around the world.
Mr Warren,85, died on July 18. 2010 at his home in Australia. His father was killed in a plane crash in 1934.
Mr Warren was the principal research scientist at the Defense Science and Technology Organization's Aeronautical Research Laboratory in Australia from 1952-1983.
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