Army and two Queen Airs confiscated from drug runners were added to the US Army inventory in 1981 as U-8Fs. NU-8F US military designation assigned to a modified commercial Queen Air converted as the prototype Model 65-90 King Air, and fitted with two 500 shp Pratt & Whitney PT6A-6 turboprop engines. The aircraft was evaluated by the US Army in 1964. U-8G XL-23C, seven U-8Ds and four U-8Es modified with more powerful engines and enlarged cabin for six passengers. Military operators Pakistan Army United States Army Aircraft on display 56-3701 – U-8D on static display at the Pima Air & Space Museum in Tucson, Arizona. 58-1358 – RU-8D on static display at the Combat Air Museum in Topeka, Kansas. 58-3051 – U-8D on static display at the U.S. Army Transportation Museum at Joint Base Langley–Eustis near Newport News, Virginia. 59-4991 – RU-8D on static display at the National Vigilance Park at Fort Meade, Maryland. This airframe was previously on display at the U.S. Army Transportation Museum. 62-3838 – U-8F on static display at the Kansas Aviation Museum in Wichita, Kansas. Specifications (L-23D) See also References Notes Bibliography Harding, Stephen. U.S. Army Aircraft Since 1947: An Illustrated Directory. Shrewsbury, UK: Airlife Publishing, 1990. . Harding, Stephen. U.S. Army Aircraft Since 1947: An Illustrated Reference. Atglen, PA: Schiffer Publishing Ltd., 1997. . Pelletier, A. J. Beech Aircraft and their Predecessors. Annapolis, Maryland, USA: Naval Institute Press, 1995. . Swanborough, F. G. and Bowers, Peter M. United States Military Aircraft since 1909. London: Putnam, 1963. External links "'Lonely Ringer' on display at Combat Air Museum" L-023 Seminole 1950s United States military utility aircraft Low-wing aircraft Twin piston-engined tractor aircraft