This aircraft was originally built as a C-45F, serial no. 44-47849, c/n 8057. It was rebuilt by Beech as a TC-45G, serial no. 51-11595, with the new c/n AF-152. in 1964 to the prototype Infinite' II, using the original tail unit, and registered N445DM. It was later modified again with a triple-fin tail, to become the prototype Dumod Liner. It was cancelled from the US civil register 30 Nov 2020.