ISRO's Polar Satellite Launch Vehicle (PSLV) on Thursday failed to launch the private-sector-built navigation satellite into orbit as the payload got trapped inside the rocket's nose. PSLV's first total failure happened on its very first flight in 1993, following which it completed 39 missions consecutively. PSLV has launched 257 satellites, and two spacecraft Chandrayaan-1 and Mangalyaan so far.