Boeing Model 204

---

title: "Boeing Model 204" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["1920s-united-states-aircraft", "boeing-aircraft", "flying-boats", "single-engined-pusher-aircraft", "biplanes", "aircraft-first-flown-in-1929", "single-engined-piston-aircraft"] description: "Type of aircraft" topic_path: "geography/united-states" source: "https://en.wikipedia.org/wiki/Boeing_Model_204" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Type of aircraft ::

::data[format=table title="Infobox aircraft"]

Field	Value
name	Model 204
image	File:Boeing model 204 Aero Digest February,1930.jpg
aircraft_type	passenger flying-boat
national_origin	United States
manufacturer	Boeing
number_built	7
introduction	1929
developed_from	Boeing Model 6E
::

| name = Model 204 | logo = | logo_size = | image = File:Boeing model 204 Aero Digest February,1930.jpg | alt = | caption = | long_caption = | other_names = | aircraft_type = passenger flying-boat | aim = | outcome = | related = | national_origin = United States | manufacturer = Boeing | design_group = | designer = | builder = | issuer = | status = | owners = | primary_user = | more_users = | service = | major_applications = | proposals = | prototypes = | number_built = 7 | construction_number = | civil_registration = | military_serial = | radio_code = | requirement = | aircraft_carried = | flights = | total_hours = | total_distance = | construction_date = | introduction = 1929 | retired = | first_flight = | initiated = | in_service = | last_flight = | expected = | developed_from = Boeing Model 6E | variants = | developed_into = | preservation = | fate = | predecessors = | successors = | concluded =

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.

Development

Construction was started on five aircraft, but only two were completed. 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.

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.

Variants

;204 :Four-seat variant of the Model 6E, one built.

;204A :As the Model 204 with dual-control, one built.

;C-204 Thunderbird :Four 204s built by Boeing Canada.

Specifications (204)

|ref=Bowers, 1966, pg. 138 |prime units? = imp |crew=one pilot |capacity=four passengers |length m=9.93 |length ft=32 |length in=7 |span m=12.10 |span ft=39 |span in=8.25 |height m=3.66 |height ft=12 |wing area sqm=43.66 |wing area sqft=470 |empty weight kg=1,496 |empty weight lb=3,298 |gross weight kg=2,240 |gross weight lb=4,940 |eng1 number=1 |eng1 name=Pratt & Whitney R-1340 Wasp |eng1 kw=305 |eng1 hp=410 |max speed kmh=185 |max speed mph=115 |cruise speed kmh=153 |cruise speed mph=95 |range km=563 |range miles=350 |ceiling m=2,743 |ceiling ft=9,000 |climb rate ms=5.1 |climb rate ftmin=1,000

|see also= |related= |similar aircraft= |lists=

References

Notes

Bibliography

• Bowers, Peter M. Boeing aircraft since 1916. London: Putnam Aeronautical Books, 1966.

References

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

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::