A SpaceX Falcon 9 rocket launched the Türksat 5B mission to geostationary transfer orbit from Space Launch Complex 40 (SLC-40) at Cape Canaveral Space Force Station at 10:58 p.m. on 18 December 2021. The Falcon 9 first stage booster supporting this mission previously supported launch of CRS-22 and Crew-3. Following stage separation, the first stage landed on the A Shortfall of Gravitas droneship stationed in the Atlantic Ocean. The fairing halves supporting this mission previously supported the GPS III Space Vehicle 05 mission.

Built by Airbus Defence and Space in its United Kingdom and French facilities, Türksat 5B is a broadband satellite which will operate in Ku- and Ka-bands at the 420 East longitude slot in geostationary orbit. Its HTS (High Throughput Satellite) payload will provide more than 50 Gbps of capacity over a wide coverage including Turkey, the Middle East, and large regions of Africa. The spacecraft will have a launch mass of 4,500 kg and electrical power of 15 kW. Besides its commercial uses, the satellite also has a dual military communication function for use by the Turkish Presidency of Defense Industries.