Beechcraft received a request for proposal for a flight trainer in 1940 from the United States Army Air Corps. It was called Model 25 and the The Wichita. It was a twin-engine plane designed to teach pilots how to fly multi engine planes. The prototype Model 25 gave way to the upgrade Model 26 and finally it was awarded as the AT-10. It went about 200 miles an hour and little more than 1000 feet in altitude. It was an important stepping stone to operational theater level bombers and troop transports.