Heinkel He 116

The Heinkel He 116 was a four-engined civil transport aircraft with a low-mounted inverted gull-wing configuration produced in the 1930s. The He 116 was mainly used as a transport aircraft and mail plane by the German national airline Deutsche LuftHansa . Later, with a new, specially modified version, it was employed as a long-range photoreconnaissance aircraft by the Luftwaffe during World War II.source wikipedia