https://spaceref.com/status-report/boeing-built-intelsat-21-satellite-sends-initial-signals/
Boeing-built Intelsat 21 Satellite Sends Initial Signals - SpaceRef
Aug 20, 2012 - Space news and reference site.
intelsat 21boeingbuiltsatellitesends
https://spaceref.com/status-report/sea-launch-successfully-delivers-the-intelsat-21-spacecraft-into-orbit/
Sea Launch Successfully Delivers the Intelsat 21 Spacecraft into Orbit - SpaceRef
Aug 20, 2012 - Space news and reference site.
sea launchintelsat 21into orbitsuccessfullydelivers
https://spaceref.com/science-and-exploration/intelsat-21-launch-successful/
Intelsat 21 Launch Successful - SpaceRef
Aug 20, 2012 - Space news and reference site.
intelsat 21launchsuccessful