page_title: Douglas DC-3
section_title: Turboprop conversions
hierarchical_section_title: Douglas DC-3 / Design and development / Turboprop conversions
caption_attribution_description: Highly modified DC-3, formerly operated by the National Test Pilot School, Mojave, CA. Earlier operated in South Africa as a maritime patrol aircraft. Airframe was modified with belly radar pod and chin FLIR turret. Written off after a take off accident at Mojave in February 2009.
context_page_description: The Douglas DC-3 is a propeller-driven airliner which had a lasting effect on the airline industry in the 1930s/1940s and World War II.
  It was developed as a larger, improved 14-bed sleeper version of the Douglas DC-2.
  It is a low-wing metal monoplane with conventional landing gear, powered by two 1,200 hp Pratt & Whitney Twin Wasp radial piston engines.
  It has a cruise speed of 207 mph, capacity of 21 to 32 passengers or 6,000 lbs of cargo, and a range of 1,500 mi, and can operate from short runways.
  The DC-3 had many exceptional qualities compared to previous aircraft. It was fast, had a good range, was more reliable, and carried passengers in greater comfort. Before the war, it pioneered many air travel routes. It was able to cross the continental US from New York to Los Angeles in 18 hours and with only 3 stops.
  It is one of the first airliners that could profitably carry only passengers without relying on mail subsidies.
  Following the war, the airliner market was flooded with surplus transport aircraft and the DC-3 was no longer competitive due to its size and speed.
context_section_description: From the early 1950s, some DC-3s were modified to use Rolls-Royce Dart engines, as in the Conroy Turbo Three. Other conversions featured Armstrong Siddeley Mamba or Pratt & Whitney PT6A turbines.
  The Greenwich Aircraft Corp DC-3-TP is a conversion with an extended fuselage and with Pratt & Whitney Canada PT6A-65AR or PT6A-67R engines fitted.
  The Basler BT-67 is a conversion of the DC-3/C-47. Basler refurbishes C-47s and DC-3s at Oshkosh, Wisconsin, fitting them with Pratt & Whitney Canada PT6A-67R turboprop engines, lengthening the fuselage by 40 in (1,000 mm) with a fuselage plug ahead of the wing, and some local strengthening of the airframe.
  South Africa-based Braddick Specialised Air Services International (commonly referred to as BSAS International) has also performed Pratt & Whitney PT6 turboprop conversions, having performed modifications on over 50 DC-3/C-47s / 65ARTP / 67RTP / 67FTPs.
  Conroy Aircraft also made a trimotor conversion with Pratt & Whitney Canada PT6 called the Conroy Tri-Turbo-Three.
caption: BSAS C-47–65ARTP powered by Pratt & Whitney Canada PT6-65AR turboprop engines
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