Boeing Model 40
The Boeing Model 40 was a United States mail plane of the 1920s. It was a single-engined biplane that was widely used for airmail services in the United States in the 1920s and 1930s, especially by airlines that later became part of United Airlines. It became the first aircraft built by the Boeing company to carry passengers.
| Model 40 | |
|---|---|
| Role | Mail plane |
| Manufacturer | Boeing |
| First flight | July 20, 1925 |
| Introduction | July 1, 1927 |
| Primary users | Boeing Air Transport Varney Air Lines Pacific Air Transport |
| Number built | ca. 80 |
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