43/4 (43R) has witnessed the launch of 320 rockets, including 320 orbital launch attempts, while Plesetsk Cosmodrome, Russian Federation, has been the site for 1669 rocket launches.
Rocket
Progress Rocket Space Center Soyuz 2.1a
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.
For just $3 per month you will get Ad-Free access to the Space Launch Schedule website.
Your support goes toward improving the Space Launch Schedule app and website.