Boeing Model 6D

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Model 6D
Role	passenger flying-boat
National origin	United States
Manufacturer	Boeing
First flight	April 1928[1]
Number built	2

The Boeing Model 6D (also Boeing B-1D) was an American biplane flying-boat built by Boeing in 1928 and 1929.

Development and design

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. The wings were taken from the Model 40 and shortened. The pusher engine and wood propeller was mounted on the lower side of the uppper wing.^[2]