Jagdstaffel 89Royal Prussian Jagdstaffel 89, commonly abbreviated to Jasta 89, was a "hunting group" of the Luftstreitkräfte, the air arm of the Imperial German Army during World War I.HistoryJasta 89 was founded on 28 or 29 October 1918. Its predecessor was Kampfeinsitzerstaffel 9. The new squadron never became operational.