Crew 2 Passengers 4
Span 45'11" Length 32'10" Empty Weight 4,030 lb
Gross Weight 5,890 lb
Power plant 3 x 145 h.p. Walter Mars
Max Speed 121 mph Range 466 miles Service Ceiling 14,760 ft
Only one built

he DAR 4 was a conventional biplane design, with unstaggered wings of unequal span braced with Warren trusses. The fuselage offered fully enclosed accommodation for the two pilots and four passengers. A curious feature of the design was that the top wing was not attached directly to the top of the fuselage as is common in cabin biplanes, but was mounted above it with cabane struts. Power was provided by three radial engines; one in the nose, and one mounted on each lower wing where the struts met. Performance was disappointing, and in particular, the narrow track of the undercarriage created difficulties. After the single prototype, no further examples were built. per wickipedia