All Aero

The Berliner Aircraft Co. had produced one commercial airplane in addition to the two earlier experimental direct lift machines. The CM 4 Sportster, a high wing parasol aimed at the private pilot market, was powered by an OX 5. One large cockpit seating two was located directly under the large wing. The front end was much like that of the Travel Air 2000, complete with the same rectangular radiator. Landing gear was a split axle type, horizontal surfaces a pleasing elliptical shape and the vertical tail an almost complete circle, though this was later changed to a lozenge shape.