Designed by a Mr. Alvarez of Brazil, built by the firm of C. G. Spencer and Sons of Highbury and tested at Hendon with ballast instead of a pilot. It was taken to altitude of 3,000 feet by a balloon and dropped with the engine running, descending steadily to a soft landing. It had a 2 hp motor, a span of 40 ft, a wing area of 400 sq.ft and weighed 150 lbs. A larger model was planned, but nothing is known of it.