Boeing Model 6D
Seaplane by Boeing
title: "Boeing Model 6D" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["1920s-united-states-airliners", "boeing-aircraft", "single-engined-pusher-aircraft", "biplanes", "aircraft-first-flown-in-1928"] description: "Seaplane by Boeing" topic_path: "geography/united-states" source: "https://en.wikipedia.org/wiki/Boeing_Model_6D" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Seaplane by Boeing ::
::data[format=table title="Infobox aircraft"]
| Field | Value |
|---|---|
| name | Model 6D |
| image | Boeing Model B1D or 6D LFQ 2.jpg |
| aircraft_type | Passenger Flying-Boat |
| national_origin | United States |
| manufacturer | Boeing |
| number_built | 10 of all models |
| first_flight | April 1928 |
| variants | Boeing Model 204 |
| :: |
| name = Model 6D | logo = | logo_size = | image = Boeing Model B1D or 6D LFQ 2.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 = 10 of all models | construction_number = | civil_registration = | military_serial = | radio_code = | requirement = | aircraft_carried = | flights = | total_hours = | total_distance = | construction_date = | introduction = | retired = | first_flight = April 1928 | initiated = | in_service = | last_flight = | expected = | developed_from = | variants = Boeing Model 204 | developed_into = | preservation = | fate = | predecessors = | successors = | concluded =
The Boeing Model 6D, a.k.a. Boeing Model 6E, Boeing B-1D and Boeing B-1E, was an American pusher biplane flying-boat built by Boeing between 1928 and 1929.
Development and design
::figure[src="https://upload.wikimedia.org/wikipedia/commons/c/c9/Boeing_Model_B1D_or_6D_LRQ.jpg" caption="Boeing Model B-1D or Model 6D"] ::
The Model 6D continued the designation series of the 1919 Boeing Model 6 but the only similarity was that they are both biplane pusher flying-boats. The 6D was designed in 1928 and 2 aircraft were built between May 1928 and April 1929. The 6Ds rectangular hull was constructed of wood with wood longerons, covered in spruce veneer. Wings were taken from the Model 40 and shortened, with the pusher engine and wood propeller mounted on the lower side of the upper wing. ::figure[src="https://upload.wikimedia.org/wikipedia/commons/c/cc/Boeing_model_B1D_6D_drawing.jpg" caption="Boeing model B1D/6D drawing"] ::
A slightly heavier, more robustly built version, powered by a 410 hp Pratt & Whitney R-1340 Wasp engine, was produced as the B-1E / Model 204 / Model 204A.
Variants
;B-1D:2:Two aircraft powered by 220 hp Wright J-5 Whirlwind 9-cyl radial engines ;B-1E:Almost identical to the B-1D with strengthened structure, the B-1E was powered by a 410 hp Pratt & Whitney R-1340 Wasp. Five aircraft were built, of a batch of ten, the remaining aircraft were re-designated Model 204. ;Model 204:Five B-1E airframes re-designated before completion. Only two were completed by Boeing, one Model 204 and one Model 204A, with a third completed by a private party using the c/n and registration of the original airframe. ;Model 204A:The second Model 204 airframe completed as a dual-control trainer for William E. Boeing.
Specifications (B-1D)
|ref=Boeing aircraft since 1916, Jane's all the World's Aircraft 1928 |prime units?=imp General characteristics
|crew=1 |capacity=3 pax |length ft=30 |length in=9 |span ft=39 |span in=8.25 |height ft=12 |wing area sqft=466 |aspect ratio= |airfoil=Boeing 103 |empty weight lb=2442 |gross weight lb=3442 |max takeoff weight kg= |max takeoff weight lb= |max takeoff weight note= |fuel capacity= |more general= Powerplant
|eng1 number=1 |eng1 name=Wright J-5 Whirlwind |eng1 type=9-cylinder air-cooled radial piston engine |eng1 hp=220
|prop blade number=2 |prop name=wooden fixed pitch pusher propeller |prop dia m= |prop dia ft= |prop dia in= |prop dia note= Performance
|max speed mph=95 |cruise speed mph=80 |stall speed mph=52 |never exceed speed kmh= |never exceed speed mph= |never exceed speed kts= |never exceed speed note= |range miles=175 |ferry range km= |ferry range miles= |ferry range nmi= |ferry range note= |endurance= |ceiling ft=12000 |g limits= |roll rate= |climb rate ms= |climb rate ftmin= |climb rate note= |time to altitude=3400 ft in 10 minutes |wing loading lb/sqft=7.4 |fuel consumption kg/km= |fuel consumption lb/mi= |power/mass=0.09 hp/lb |thrust/weight=
|more performance=
References
References
- (1989). "Boeing aircraft since 1916". Naval Institute Press.
- (1928). "Jane's all the World's Aircraft 1928". Sampson Low, Marston & company, ltd.
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