1559: Tycho Brahe began his studies at the University of Copenhagen.

1907: Louis Blériot flies and crashes his powered monoplane Nº V at Bagatelle, France.

1924: The Argentinean Marquis de I. Pescara’s helicopter establishes in France a flying record of 2,550 feet (c. 777 meters) in 4 minutes, 11 seconds. This helicopter provides for auto-rotation (free blade rotation) in case of engine failure. This invention is a life-saving device, as it allows for a measure of control and lift.

1945: The International Air Transport Association (IATA), an inter-airline body to fix rates and ensure cooperation on safety procedures, is formed; it succeeds the International Air Traffic Association, set up in 1919.

1960: First flight of the Grumman A2F-1, A-6 Intruder prototype.

1979: First flight of the Learjet 55.

2012: Slovenian pilot Matevž Lenarčič returns to Slovenia, completing a 62,000-mile (99,839-km) round-the-world flight in a Pipistrel Virus SW914 ultralight aircraft, claiming to be the first person to circle the world in an ultralight without a copilot. The flight, sponsored as the "GreenLight World Flight," had begun from Slovenia on 8 January 2012 and had included passing Mount Everest at an altitude of 29,344 feet (8.944 meters), some 300 feet (91 meters) above the mountain's peak.