two downward-firing machine guns for ground attack but they were found to be of limited use because of the difficulty of aiming them. The J-Is were mainly used for army co-operation and low-level reconnaissance. They were also used for dropping ammunition and rations on outposts that could not be easily supplied by other means. The production at Junkers works was quite slow because of poor organization and only 227 J.Is were manufactured before production ceased in January 1919. At least one was lost to ground fire, shot down by a French anti-aircraft machine-gun firing armour-piercing rounds, although this was apparently an isolated event as some sources claim none were lost in combat. Some were lost in landing accidents and other mishaps. Operators Luftstreitkräfte Survivors Only one relatively complete aircraft survived, bearing German military serial number J.I 586/18. It is preserved at the Canada Aviation and Space Museum in Ottawa, Ontario, Canada. This aircraft, construction number 252, was manufactured in 1918 and was a war trophy that was sent to Canada in 1919. It was in the possession of the Canadian War Museum before being transferred to the Canada Aviation and Space Museum in 1969. A Junkers J.I fuselage exists at the Italian Air Force Museum in Vigna di Valle. This aircraft was previously exhibited at the Leonardo da Vinci Museum at Milano and was restored at the Deutsche Technikmuseum Berlin between 2005 and 2010. A flyable Junkers J.I replica is under construction in Hungary. Specifications See also References Notes Bibliography Grey, C. G. Jane's All the World's Aircraft 1919. London: Putnam, 1919. Grosz, P.M. Junkers J.I, Windsock Datafile 39. Hertfordshire, UK: Albatros Productions Ltd., 1993. . "Report on the Junker Armoured Two-Seater Biplane, Type J.1." Flight, 26 February 1920 "Report on the Junker Armoured Two-Seater Biplane, Type J.1." Flight, 4 March 1920 "Report on the Junker Armoured Two-Seater Biplane, Type J.1." Flight, 11 March 1920 "Report on the Junker Armoured Two-Seater Biplane, Type J.1." Flight, 18 March 1920. Taylor, Michael J. H. Jane's Encyclopedia of Aviation. London: Studio Editions. 1989, p. 538. World Aircraft Information Files. London: Bright Star Publishing, p. File 898, Sheet 01. External links Junkers J1 at the Canada Aviation and Space Museum Junkers J4 (Hugo Junkers Homepage) 1910s German attack aircraft 1910s German military reconnaissance aircraft J 004 Sesquiplanes Aircraft first flown in 1917