In 1947, Chuck Yeager made the first supersonic flight.
Yeager broke the sound barrier while flying his plane named “Glamorous Glennis” in honor of his wife. He achieved a speed of Mach 1.06 (807.2 mph or 1299.06 kph) at 43,000 feet (13.11 km).
Learn more at http://militaryhistory.about.com/od/militaryaircraft/p/bellx1.htm.
Hee hee I was 2 years old in 1947…