| DC-4E | |
|---|---|
 The Douglas DC-4E in flight | |
| General information | |
| Type | Experimental airliner |
| Manufacturer | Douglas Aircraft Company |
| Primary users | United Airlines[1] |
| Number built | 1[2] |
| History | |
| First flight | June 7, 1938[3] |
| Developed into | Douglas DC-4 Nakajima G5N |
The Douglas DC-4E was an American experimental airliner that was developed before World War II. The DC-4E never entered production due to being superseded by an entirely new design, the Douglas DC-4/C-54, which proved very successful.
Many of the aircraft's innovative design features found their way into the Nakajima G5N bomber after the single DC-4E prototype was sold to a Japanese airline and clandestinely dismantled for study by Nakajima at the behest of the Imperial Japanese Navy.[2]