The “Soyuz-ST-B” launch vehicle with Fregat-MT upper stage and four European O3b satellites was rolled out and installed on the launch complex of Guiana Space Center on April 1.
Roscosmos specialists performed mechanical, electrical and pneumatic assembly of the head part with the launch vehicle.
On the pre-launch days are also scheduled the autonomous checks of the “Fregat-MT” upper stage and the “Soyuz-ST-B” launch vehicle, control and final tests, as well as checking of the starting readiness of the upper stage.
Launch is scheduled for April 4 at 19:30 (Moscow time).