This airframe is actually a composite of parts from six aircraft. Many sections and parts are also being scratch-built using original blueprints. Airframe is identified as 44-83722 since that plane supplied the bulk of the parts, but they are adopting another parts bird, 44-85813, as their s/n. Other aircraft used are: 44-83316, 44-83525, 44-85505, 44-85734.