From its ocean-based launch site located directly on the equator at 154 degrees West longitude, a Zenit-3SL launch vehicle will lift the EUTELSAT-70B spacecraft into an optimized geosynchronous transfer orbit on its way to its final geostationary orbit at 70.5° East longitude.
The Zenit-3SL rocket will begin its ascent phase of flight. The first stage of the vehicle will separate 2:30 minutes (150 seconds) after liftoff, and the protective payload fairing will be jettisoned 77 seconds later at 3:47 minutes into the flight. The second stage will conduct a 6 minute burn, followed by its separation from the Block DM-SL upper stage. The Block DM-SL will begin its first of two burns at 8:41 minutes (521 seconds) into the mission, for the duration of 320 seconds. The upper stage will then shut down for a 36 minute coast period, followed by the start of the second burn at 50 minutes into the mission. Spacecraft separation is expected at 1:06 minutes after liftoff, over the Indian Ocean.