de Havilland DH.50

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De Havilland DH.50
de Havilland DH.50J Qantas
Type: Airliner
Design country:

United KingdomUnited Kingdom United Kingdom


de Havilland Aircraft Company

First flight:

July 30, 1923

Number of pieces:


The de Havilland DH.50 was a single-engine biplane made by the British manufacturer de Havilland Aircraft Company in the 1920s. Licensed versions of the four-passenger aircraft were made in Australia , Belgium and Czechoslovakia .


In the 1920s, the aircraft from the First World War had to be replaced by more modern models. De Havilland then developed an aircraft based on the DH.9 with a cabin designed for four passengers and an open cockpit for one pilot. The hull was covered with plywood.

The first DH.50 made its maiden flight on July 30, 1923 and won an award for reliability just a few days later after flying from Copenhagen to Gothenburg . Of the 38 copies built, 17 were made by de Havilland and the rest as licensed versions from other manufacturers. Several different engines were used.

Sectional drawing of the DH.50J G-BEFO used by Alan Cobham for his flight from London to Cape Town (English labeling)

In 1924 the prototype of the DH.50 won the King's Cup Race . With the second model, known as the DH.50J because of its Armstrong Siddeley Jaguar engine, Alan Cobham covered the 25,000-kilometer route from London to Cape Town between November 1925 and February 1926. After being converted into a floatplane, it flew from Great Britain in 1926 to Australia and back again.

Eleven licensed builds were built in Australia, including four 50A and three 50J by Qantas , three 50A by Western Australian Airlines and one 50A by Larkin Aircraft Supply Company . The Royal Flying Doctor Service began operations with one of the aircraft built by Qantas . The Belgian company SABCA built three copies , seven DH.50 were built by Aero in Prague .


Original version, 3 copies
improved version, 32 copies, including 18 licensed buildings
Version with a 287 kW Armstrong-Siddeley Jaguar radial engine , three Qantas licensed buildings


  • Kingdom of Iraq 1924Kingdom of Iraq Kingdom of Iraq
    • Iraq Petroleum Transport Company Ltd.
  • United KingdomUnited Kingdom United Kingdom
    • Air Taxis Ltd
    • Brooklands School of Flying Ltd.
    • Imperial Airways Ltd.
    • North Sea Aerial and General Transport Company Ltd.
    • Northern Air Lines Ltd.

Technical specifications

Parameter Data
crew 1
Passengers 4th
length 9.07 m
span 13.03 m
height 3.35 m
Wing area 40.32 m²
Empty mass 1022 kg
Takeoff mass 1769 kg
Top speed 180 km / h
Service ceiling 4450 m
Range 612 km
Engines a 6-cylinder in- line Siddeley Puma engine with 172 kW

See also

Web links

Commons : De Havilland DH.50  - collection of pictures, videos and audio files

Individual evidence

  1. ^ Sir Alan J. Cobham: A Time to Fly , London 1978, p. 60
  2. ^ Sir Alan J. Cobham: A Time to Fly , London 1978, pp. 85, 109