1. Ultra light aircraft, which is the lightest aircraft classified by weight, has developed rapidly since the 1970s.
 2. There is no strict and unified regulation on the distinction between light aircraft and light aircraft.
 3. Ultra light aircraft belong to civil aviation category.
 4. In recent years, the development of ultra light aircraft has attracted great attention from Chinese aviation industry and user departments. The main reason is that ultra light aircraft has the characteristics of low altitude, low speed, stability and safety, and is simple in structure, light in weight, cheap in price, easy to operate and maintain, which can be widely used in agriculture, forestry and animal husbandry, exploration, aerial photography Aviation sports and tourism.
 5. Therefore, with the economic development of our country and the improvement of people's living standards, this kind of aircraft will have a broad application prospect, which is one of the directions of general aviation technology development.