Result of design studies begun as early as 1928 by William B. Stout, well known for association with Ford Tri-Motors. Intended as simplified and safe personal airplane, succeeded in accomplishing several of its goals. Installing engine in rear of fuselage reduced sound level in cabin (prop screened from passengers for their safety). In addition, fuselage built around longitudinal keel structure to increase crash worthiness. Steel tube framework with corrugated aluminum exterior provided strong structure with minimum weight. Entry doors and interior appointments followed contemporary automobile design. Exhibited at 1931 National Aircraft Show. Span 43 ft; length 24 ft; weight 950 lbs empth, 1425 lbs gross.