| NA-40 | |
|---|---|
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| |
| Role | Attack bomber |
| National origin | United States |
| Manufacturer | North American Aviation |
| First flight | January 1939 |
| Primary user | United States Army Air Corps |
| Number built | 1 |
| Developed from | North American XB-21 |
| Developed into | North American B-25 Mitchell |
The North American NA-40 was an American prototype bomber aircraft developed by North American Aviation in the late 1930s for evaluation by the United States Army Air Corps. Although unsuccessful, it led directly to the North American B-25 Mitchell medium bomber.