Model 40 (Passenger)

Model 40 (Mailplane)

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Boeing Model 40B flying over mountain

Model 40B with Passengers

Model 40B mailplane

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Model 40B-4 Mailplane Manufacturing

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Boeing Model 40A Mail Plane in Flight Above Nevada's Ruby Mountains

Pacific Air Transport Hangar in Sandpoint, ID

Eddie Allen in the Cockpit of a Model 40B-4

Model 40A Soars over Nevada’s Ruby Mountains

Model 40C in Boeing Factory

Model 40A Flight Line

Boeing Model 40 with Pilot

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Boeing Model 40B in Flight Above Mountain

The four-passenger-Model 40B-4 was the major production model of the first Boeing mailplane. It had extra cabin windows and could carry four people as well as 500 pounds of mail. The first Model 40 was redesigned as the Model 40A in 1927 using an air-cooled engine. This engine was about 200 pounds lighter than the water-cooled engines used by competitors for the airmail contract, so the Model 40A won and became the first Boeing-built airplane to carry paying passengers as well as mail. The Model 40 series (A, B, and C) flew under the banner of Boeing Air Transport, a new company subsidiary. Models 40X and Y were custom-built for oil companies.

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Unique identifier BI229111

Boeing ID 2761b

Type Image

Size 3534px × 2685px 9MB

License type RM

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