The Boeing Model 200 Monomail was an American mail plane of the early 1930s. == Design and development == The aircraft marked a departure from the traditional biplane configuration for a transport aircraft, instead featuring a single, low set, all metal cantilever wing.
The Boeing Model 200 Monomail was an American mail plane of the early 1930s. == Design and development == The aircraft marked a departure from the traditional biplane configuration for a transport aircraft, instead featuring a single, low set, all metal cantilever wing.
Source: Wikipedia "Boeing Monomail" · CC BY-SA 4.0
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