- Family: Delta
- Length: 35 m
- Diameter: 2.44 m
- Launch Mass: 185 T
- Low Earth Orbit Capacity: 951 kg
The Delta 3914 was manufactured by McDonnell Douglas with the first launch on 1975-12-13. Delta 3914 has 10 successful launches and 2 failed launches with a total of 12 launches. The Delta 3000 series was an American expendable launch system which was used to conduct 38 orbital launches between 1975 and 1989. It was a member of the Delta family of rockets. Several variants existed, which were differentiated by a four digit numerical code.