Tyumen B1 was a Soviet Made Naval Strategic Bomber designed in the 1960s designed to Counter USS Arleigh Burke and F14 Tomcat, Manufactured in Tyumen Aircraft Factory at Omsk, This plane take the first Maiden Flight in 1962, and the First Flight was in 1972 after the Fly from Riga to Vladivostok, Export variant were sold to Warsaw Pact and Egypt and also Iraq as name Tyumen AB1, in 1974 in need of Strategic Bomber for the Indonesian Navy to support the Invasion of East Timor, Tyumen was chose because the Speed and Flight Range winning the Bid Against Tupolev and Ilyushin, the First Plane Arrived in 2nd of February 1975, 30 Unit were bought and put in 3 Different Squadron in Indonesia and the 20 more unit came in 1976, however due to breakup of Soviet Union in 1991, this plane face shortage in terms of Sparepart, so in 1997 after the Asian Financial Crisis, Indonesia sold 4 unit this Bomber to Algeria, after the crash in 2000, There is a talk between Navy High Commander and the Air Force, then after the talk, it settled, 44 of this unit will be sold to Argentine in ecchange for 32 Unit of Pucara , The Remaining 24 goes to the Air Force, till the Crash in Medan and Poso at 2007 and 2013, so the Farewell flight was made in 2018 after that some of them scrapped and sold, the Remaining were kept in Museum