The NAMC YS-11 was a Japanese postwar all-metal low-wing passenger and transport aircraft. The drive was provided - in the basic version - by two turboprop engines. Rolls-Royce Dart Mk.542-10K for 3030 hp. each one The first flight of this machine took place in 1962. In 1962-1974, serial production continued, which led to the creation of about 180 aircraft of this type. The NAMC YS-11 was developed by a consortium of many Japanese companies (such as Sumitomo or Kawasaki Heavy Industries) at the initiative of the Japanese government as a medium-range passenger vehicle intended for local flights. When designing the machine, emphasis was placed on the use of the widest possible range of electronic equipment and avionics, as well as the lowest operating costs. Finally, a very successful machine was created which, with just two engines, offered a range and performance similar to the four-engined Vickers Viscount, and could carry almost 50% more passengers than the competing Fokker F27 Friendship. In the course of serial production, several development options were created, such as: YaS-11A-200 (variant with increased own weight), YaS-11A-300 (passenger-transport variant) or YaS-11A-400 (transport variant used by self-defense Japanese troops). The NAMC YS-11 was successful in overseas markets and was used by airlines in countries such as the Philippines, Brazil and Argentina.
