Sunset sky with a single-engine Soviet Su-9 aircraft
German, single-engine, piston-engined fighter ME-109
Single-engine piston -engined fighter - low-wing Luftwaffe ME-109
American armored, single-seat, twin-engine Thunderbolt attack aircraft in flight
Single-engine piston-engined fighters-low-flying above the ground
Soviet single-engine aircraft flying in the clouds
Drawing of the Soviet ANT-25 single-engine aircraft in the sky