Ed Yost own interests turned toward reviving the lost practice of manned hot-air ballooning. This technology had first been invented in France by in the late 18th century by pioneers led by the Montgolfier brothers, but under the Montgolfier system, the balloon's air was heated by a ground fire prior to the balloon being released. The inherent danger of this type of balloon flight led to the system being abandoned when hydrogen and later helium became available. One of Yost's key engineering insights was that a hot-air balloon could be made to carry its own fuel. The invention of relatively light burners
1989 Alice Springs hot air balloon crash lookout for a period of 30 seconds (during which the other balloon was hidden from view) and that the failure seriously endangered the lives of those below". During his 13-week trial, the court was told that Sanby had outlaid about $1 million of borrowed money to get into the new commercial hot-air ballooning industry, and that business at Toddy's Safari Ballooning was booming. Sanby's conviction was subsequently overturned on appeal. Sanby was imprisoned for five years for fraud connected to a separate business endeavour, in the District Court of Gympie, Queensland, in August 2014. 1989 Alice Springs hot air balloon