- Family: Soyuz
- Length: 46.3 m
- Diameter: 2.95 m
- Launch Mass: 312 T
- Low Earth Orbit Capacity: 7020 kg
The Soyuz 2.1a was manufactured by Progress Rocket Space Center with the first launch on 2004-11-04. Soyuz 2.1a has 40 successful launches and 1 failed launches with a total of 41 launches. The Soyuz 2.1A converted the flight control system from analog to digital, which allowed launch from fixed platforms. It also allowed big fairings and payloads.
It is currently used for crewed Soyuz and Progress flights to the ISS.
