The Orenco IL-1 was an American two-seat liaison biplane built for the United States Army by the Ordnance Engineering Corporation (Orenco).
[1] The Model E-2 was a conventional biplane powered by a 400 hp (298 kW) Liberty 12 engine and designated IL-1 (Infantry Liaison) by the Army.
[2] First flown in 1919, two aircraft were built and evaluated by the Army at McCook Field as P-147 and P-168, but the type did not enter production.
[1] Data from [1]General characteristics Performance