 Then on July 27, 1976, John Moody demonstrated ultralight aviation at the annual EAA fly-in convention in Oshkosh, Wisconsin, with a foot launched McCulloch 101 powered "Icarus II"  in front of thousands of spectators, starting the modern ultralight aviation revolution in the United States.Later, he added wheels to the aircraft and by the end of 1979, there were almost 100 competing companies selling powered ultralights (microlights) but very few were foot-launchable.In 1979, a powered backpack called the Motolotnia - White Eagle, designed by Jerzy Kolecki, became available for sale.