| XB-38 Flying Fortress | |
|---|---|
| |
| Role | Strategic bomber |
| Manufacturer | Boeing (B-17E aircraft)/Vega (modifications) |
| First flight | 19 May 1943 |
| Retired | 16 June 1943 |
| Status | Cancelled |
| Primary user | United States Army Air Forces |
| Number built | 1 |
| Developed from | Boeing B-17 Flying Fortress |
The XB-38 Flying Fortress was a single example conversion of a production B-17E Flying Fortress, testing whether the Allison V-1710 V type engine could be substituted for the standard Wright R-1820 radial engine during early World War II.