ISRO Chief --

PSLV completes 30 of the 31 tasks. Last time a marginal deviation led to the problem. We've made the system more robust. We've achieved putting multiple satellites in an orbit and putting satellites in multiple orbits. After 100 successes there can still be failures. The overall performance was built to take more and more complex operations.We should learn from the past mistakes. We have made rigorous changes after the failure.