The first aerial circumnavigation of the world was conducted in 1924 by a team of aviators of the United States Army Air Service, the precursor of the United States Air Force.
The trip took 175 days, covering over 44,342 km.
The Air Service set up support facilities along the proposed route and in April 1924 sent a flight of four aircraft west from Seattle, Washington.
Six months later, two aircraft completed the flight.
Even if considered as primarily a publicity stunt, the flight was a brilliant accomplishment in which five nations had already failed.