It flew until the demise of the Soviet Union and it is currently stored at Ramenskoye Airport near Zhukovskiy.The Tu-156 was intended to fly circa 1997, but was cancelled due to the end of the Soviet Union.[2] The fuel tank was located in the air-blown (or nitrogen) rear compartment.A distinctive feature of the aircraft is that the protrusion of the ventilation system is visible on the tail (near the no.From January 1989, Tupolev was mainly testing natural gas as a substitute for kerosene.