Command-Aire 3C3
The Command-Aire 3C3 and similar 4C3 and 5C3 are American three-seat open cockpit utility, training and touring biplanes developed by Command-Aire in the late 1920s and early 1930s. == Design and development == The Command-Aire did not at first appear to offer much of an advancement over the vast multitude of three seat biplanes built around the ubiquitous Curtiss OX-5 engine to similar designs, with similar dimensions and construction methods, many of which were already in production.