Hot air balloon Montgolfier brothers, and had its first public demonstration on 4 June 1783 with an unmanned flight lasting 10 minutes, followed later that year with manned flights. The 1785 Rozière balloon, a type of hybrid balloon, named after its creator, Jean-François Pilâtre de Rozier, has a separate cell for a lighter than air gas (typically helium,) as well as a cone below for hot air (as is used in a hot air balloon) to heat the helium at night. Hydrogen gas was used in the very early stages of development but was quickly abandoned due to the obvious danger of introducing
2012 Ljubljana Marshes hot air balloon crash Civil Aviation Agency reported on 27 August 2012 that commercial hot air balloon flights were banned temporarily. The duration of the ban was not given, but the balloon crash was cited as the reason for the ban. Throughout the next year, all involved parties coordinated proposals for stricter rules, which were accepted, and new licenses were granted again starting in August 2013. In the meantime, several operators closed because they were prevented from selling flights, while the remaining ones faced severely reduced sales even after the ban was lifted. In their report, official accident investigators accused the pilot of using