What is the fastest a 747 has flown?

Aided by a more powerful jet stream than usual, this rapid journey saw the 747 reach a top speed of 825 mph. Popular Mechanics reports that it was so powerful on this occasion because of a 'bomb cyclone' near Greenland.



The fastest recorded speed for a commercial Boeing 747 occurred in February 2020, when a British Airways 747-400 reached a ground speed of 825 mph (1,327 km/h) while flying from New York to London. This was achieved by "riding" an exceptionally powerful jet stream over the Atlantic, pushing the plane at subsonic speeds through the air but at supersonic speeds relative to the ground. In terms of design, the Boeing 747-8 is the fastest commercial airliner currently in service, with a maximum operating Mach of 0.86, allowing it to reach top cruising speeds of roughly 706 mph (1,136 km/h) under standard atmospheric conditions without the assistance of tailwinds.

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Aircraft are put through extreme testing during their certification, but such limits are never intended to be actually faced. The 747-100, for instance, was tested up to Mach 0.99, almost breaking the sound barrier. Other 747s, such as Air Force One, have approached the sound barrier but never crossed it.

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Mach 10 speed has never been achieved by a manned aircraft, though, so it has never been tested. Mach 10 has, however, been achieved by a spacecraft - on November 16, 2004, NASA launched the X-43A, an air-breathing hypersonic vehicle, and was able to reach real Mach 10 while being pushed into the atmosphere.

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Fifty years ago, the federal government banned all civilian supersonic flights over land. The rule prohibits non-military aircraft from flying faster than sound so their resulting sonic booms won't startle the public below or concern them about potential property damage.

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The 747 is one of the largest commercial aircraft ever built, and the 747-8 Intercontinental (747-8i) variant wins the race as the fastest commercial plane in service today. This plane is as tall as a six-story building with a top speed of Mach 0.86. That's equivalent to 659.85 mph.

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Speed: 747s can fly faster than the A380s. The maximum cruise speed of an A380 is Mach 0.89 (89% of the speed of sound in air) while the two newest variants of the 747 (“-400” and “-8”) can cruise at a speed of Mach 0.855.

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If traveling at Mach 10, it would take approximately 3 hours and 20 minutes to circle around the world. That's pretty fast! You'd be able to see some amazing sights in that amount of time - from the Eiffel Tower in Paris to the Great Wall of China.

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Technical, financial, and regulatory hurdles make a return to the skies extremely unlikely. Concorde is an aircraft that captures the imagination and is instantly recognizable even to non-aviation fanatics.

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This is due to the aircraft's large size and the amount of fuel it requires to make a single flight. On average, it costs around $20,000 to fill up an A380.

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