Model 204
Role passenger flying-boat
National origin United States
Manufacturer Boeing
Introduction 1929
Number built 7
Developed from Boeing Model 6E

The Boeing Model 204 was an American biplane, pusher configuration flying-boat aircraft built by Boeing in 1929. Externally, the 204 looked identical to the Boeing Model 6E, but a number of internal changes, including increasing the passenger capacity to four, gave it a new type certificate and model number.[1]


Construction was started on five aircraft, but only two were completed.[1] The first, designated 204 and the second 204A. A third aircraft was built by a private owner who had bought the three incomplete machines. The 204A was a dual-control version which was later owned by Peter Barnes, who flew it on his private Seattle-Victoria, British Columbia main run.[2]

The C-204 Thunderbird, a modified 204, was the first type produced by Boeing Aircraft of Canada. These had altered wing and tailplane incidence and a reduction in upper wing area. The prototype was first flown on 30 March 1930, the first of a batch of four. They failed to sell readily, though they were sometimes leased for work. Eventually three were sold. All worked in British Columbia, remaining active until 1939.[3]


Four-seat variant of the Model 6E, one built.
As the Model 204 with dual-control, one built.
C-204 Thunderbird
Four 204s built by Boeing Canada.[3][4]

Specifications (204)

Data from Bowers, 1966, pg. 138

General characteristics




  1. ^ a b Bowers, 1966, p. 137
  2. ^ Bowers, 1966, p. 138
  3. ^ a b Molson and Taylor pp. 113-4
  4. ^ Bowers, 1966, pg. 139


  • Bowers, Peter M. Boeing aircraft since 1916. London: Putnam Aeronautical Books, 1966.
  • Molson, K.M.; Taylor, H.A. (1982). Canadian Aircraft since 1909. London: Putnam Publishing. ISBN 0-370-30095-5.

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