The Junkers Ju 390 was a German long-range derivative of the Junkers Ju 290 aircraft, intended to be used as a heavy transport aircraft, maritime patrol aircraft and long-range bomber. It was one of the aircraft designs submitted for the abortive Amerika Bomber project, along with the Messerschmitt Me 264, the Focke-Wulf Ta 400 and the Heinkel He 277.[1][2]