Derived from the Do 217, this air¬craft was designed in 1939 to meet the Luftwaffe’s Bomber B specification. Drop¬ped in 1940 to allow work to be hastened on the Do 217P, the 317 was resurrected in 1941 in two forms. The 317A was little more than a pressurized 217, while the 317B had a much greater span, completely new engines, remote control cannon barbettes and a bombload of 5600 kg (12,346 lb), with an overload option of two 1800 kg (3968 lb) bombs on wing racks. One was built and six more were converted to Do 217R on the production line. The 317 was dropped in 1943.
Do 317B
Span: 25.9 m (85 ft)
Length: 16.8 m (55 ft 1.5 in)
Gross weight: 24 000 kg (52911 lb)
Maximum speed: 670 km/h (416 mph)
All Aero 