Acquired by American Airlines from the Reconstruction Finance Corporation on 7 December 1945 and modified as a flying test bed for airborne radar research. The print has a Kaiser-Fleetwings rubber stamp dated 'SEP 20 1946' on the back. That plus the inclusion of the company's Chief Engineer (R.W. Ayer) in the photo suggests their involvement in providing the strange-looking cupola. On 8 August 1947 the aircraft was wrecked when it stalled into the East River during a single engine missed approach at LaGuardia/NY.