The world's smallest hand-made aircraft, John kalusa of the United States, used only light wood and blades to carve out the world's smallest hand-made aircraft, with a total of 5829 micro air vehicles, which is the collection record of the smallest handmade aircraft in the world.
John kalusa died in 2003, and his family donated John kalusa's collection of small airplanes to ambred Aeronautical University. Now they are on the first and second floors of the school library.
John kalusa's hobby began in 1936, and at the age of 14, he began making World War I mode combat games.
After his retirement, John kalusa worked on small airplanes until his death.