Orenco IL-1
 The Orneco IL-1 was an American two-seat liaison biplane built for the United States Army by the Ordnance Engineering Corporation (Orenco). 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. 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.