GSLV-5P launch fails due to technical snag (25dec 2010). ISRO or the Indian Space Research Organisation suffered a setback when GSLV-F06 mission carrying GSAT-5P failed to launch due to a technical failure at stage one. ISRO was set to launch India's heaviest communication satellite into orbit today. The mission was to be the first GSLV mission after the failure of the flight test of the indigenous cryogenic stage in the GSLV-D3 mission in April this year. India's Geosynchronous Satellite Launch