Following the failure of Walter J. Carr's first aircraft company, the CSC Aircraft Company, Carr worked as a tester for the new Warner Scarab radial engines. Carr flew with Scarabs on a Travel Air 2000, and later cannibalized the test aircraft to produce the first Cabinaire aircraft design.[1]
The prototype Cabinaire was formed around a welded steel tube Travel Air 2000 fuselage modified for an enclosed cabin. A new center section of wing was added and Travel air wings were reinstalled onto the center sections. The biplane aircraft featured a radial engine, and conventional landing gear. The upper wing was mounted several inches above the enclosed cabin.[2] The entire plane was fabric covered with wooden wing spars and ribs. The upscale cabin used two individual upholstered wicker seats in the front and a wicker bench seat for passengers. The interior used velour finishing, nickel plating, mohair rugs, mahogany panels and roll-down windows.[3]
Prototype #2 was made from parts of the first. Each production model differed slightly from each other with choices of engines, and landing gear and aileron improvements.
In 1929, Viola Gentry and Jack Ashcroft attempted an endurance record for flight with aerial refueling in a modified Cabinaire SN#5 named The Answer. The name was chosen in response to the Army aircraft that had completed previous endurance records, the Question Mark. The aircraft had a 55-gallon cabin tank, and 21 gallon wing tanks installed for the attempt. The Answer crew was unable to refuel after the first ten hours of flight due to fog and crashed 28 June 1929, killing Ashcroft. Carr had been the original choice of co-pilot, but had to pass on the opportunity when struck with pneumonia.[4]
In 1930, a Cabinaire was entered in the 4814 mile long Ford National Reliability Air Tour, placing 15th out of 18.[5] The same aircraft has been restored and was still flown in 2011.[6]