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Model 40 (Passenger)
Model 40 (Passenger) 
Model 40 (Passenger)
Model 40 (Passenger) 
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Conceptually similar
Model 40C and Model 95 Mailplane Manufacturing
Model 40C and Model 95 Mailplane Manufacturing 
Boeing Model 40C at Gorst's Field
Boeing Model 40C at Gorst's Field 
Model 40B-4 Mailplane Manufacturing
Model 40B-4 Mailplane Manufacturing 
Model 40A Mailplane Assembly
Model 40A Mailplane Assembly 
Model 40B at Boeing Hangar
Model 40B at Boeing Hangar 
Mailplane Progress
Mailplane Progress 
Model 40B with NACA Cowling
Model 40B with NACA Cowling 
Boeing Model 40B flying over mountain
Boeing Model 40B flying over mountain 
Model 40A Mailplanes at Boeing Field
Model 40A Mailplanes at Boeing Field 
Model 40Y Special Order Model 40
Model 40Y Special Order Model 40 
Model 40A on Ground
Model 40A on Ground 
Model 40B-4 at Plant I Hangar
Model 40B-4 at Plant I Hangar 
Boeing Model 40A Mail Plane in Flight Above Nevada's Ruby Mountains
Boeing Model 40A Mail Plane in Flight Above Nevada's Ruby Mountains 
Boeing Model 40 with Pilot
Boeing Model 40 with Pilot 
Boeing Model 40B in Flight Above Mountain
Boeing Model 40B in Flight Above Mountain 
Boeing Model 40 with Special Passenger
Boeing Model 40 with Special Passenger 
Model 40A Flight Line
Model 40A Flight Line 
Model 40A Soars over Nevada’s Ruby Mountains
Model 40A Soars over Nevada’s Ruby Mountains 
Boeing Model 40 Landed
Boeing Model 40 Landed 
Boeing Model 40 US Mail Carrier
Boeing Model 40 US Mail Carrier 
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Model 40C in Boeing Factory

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 BI23968 
Boeing ID 1936b 
Type Image 
Size 5996px × 4764px   27MB 
License type RM 
Keywords
1920s
day
factories
full body views
grid patterns
ground shots
hangars
interiors
mail planes
nobody
other livery
passenger helicopters
photos
right side views
text
vintage / retro
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