https://modelist-konstruktor.org/aviation/the-utility-transport-aircraft-su-80gp
The UTILITY transport AIRCRAFT su-80GP | DIY | HOBBY | DESIGN
May 13, 2018 - The development of aircraft, initially under the designation C-80 OKB. Sukhoi started at the initiative of M. P. Simonov in the early 1990s in the framework of...
transport aircraftutilitysudiyhobby