Indian National Satellite(INSAT) is a multipurpose space system for communication,broadcasting and eteorological services. INSAT-3C, carrying Fixed Satellite Services (FSS) transponders, Broadcast Satellite Services (BSS) transponders and Mobile Satellite Services (MSS) transponders is intended to continue the services of INSAT-2DT and INSAT-2C which are nearing their end of life besides improving and augmenting the insat system capacity. INSAT-3C is the second satellite of the INSAT-3 series; the first satellite, INSAT-3B was launched in March 2000. Another three satellites INSAT-3A, INSAT-3D and INSAT-3E are planned to be launched under INSAT-3 series in the coming years.

Launched into the geosynchronous transfer orbit by the European Ariane launch vehicle, the liquid apogee motor on board, INSAT-3C is used to lift the satellite to its final geosynchronous orbit, which is about 36,000 km above the equator. The satellite is finally positioned at 74° east longitude. Like all other INSAT satellites, INSAT-3C is controlled from the Master Control Facility at Hassan in Karnataka.