Sea Launch AG announced today that approximately 40 seconds after liftoff of the launch of the Intelsat 27 spacecraft, all telemetry was lost indicating a loss of mission. The spacecraft, built by Boeing Satellite Systems was launched on a Zenit-3SL launch vehicle from the equator on the ocean-based Odyssey launch platform, positioned at 154 degrees West longitude.
Sea Launch will establish a Failure Review Oversight Board to determine the root cause of the incident and will provide additional information, as it becomes available, on the Sea Launch website at: www.sea-launch.com
On 9 December, during the target orbit insertion phase, the Yamal 402 spacecraft separated ahead of the scheduled time, however the spacecraft is under control and evaluation is performed of its orbit parameters. All the satellite systems are functioning nominally and experts believe that 2-4 additional burns of the propulsion system will be required to place it to the target orbital position.
Following the completion of all maneuvers, the spacecraft will be handed over to OAO Gazprom Space Systems for operation as originally planned, i.e. on 8 January.
Sea Launch Zenit-3SL rocket has successfully launched the EUTELSAT-70B satellite weighing 5,210 kilograms (11,485 lbs.) and built by Astrium, an EADS company, from the Equator on the ocean-based Launch Platform Odyssey completing its 2nd mission for Eutelsat and marking the completion of Sea Launch's third and final mission in 2012. The launcher lifted off at 12:43:59 Pacific Standard Time (PST) on Monday, December 3rd (20:43:59 UTC/GMT, 21:43:59 CET) and one hour and six minutes later, the Block DM-SL upper stage inserted the satellite into geosynchronous transfer orbit and Eutelsat acquired the spacecraft's first signals shortly after spacecraft separation. All systems performed nominally throughout the launch mission.