A new three-place North American O-47A observation airplane with Army Air Corps marking was the first ircraft to arrive at Ames. The Circular antenna on top of the canopy is for direction finding. A close look show that help from the front cockpit was needed for directional control when using a rope (instead of a tow bar) to tow the aircraft. (Sept 1940). W.H. McAvoy Ames test pilot returning from an early flight of first test airplane at Ames, a North American O-47A-1 (or 0-47 AAC37-323) This aircraft severed for a short time upon arrival as a research aircraft for heated-wing deicing. NOTE: printed in NASA Ames Publications: Adventures in Research - SP-4320 57 Years - Flight Research at AMES - NASA SP-1998-3300