What is Gagan Project? Examine its potential benefits with respect to India's civil aviation sector.

GAGAN stands for GPS-Aided Geo Augmented Navigation (GAGAN) is a satellite based navigation system that will serve as a low cost substitute to GPS service over the India, Bay of Bengal, South-east Asia and Middle East along with expansion up to Africa. The system has been jointly developed by ISRO and AAI.
Work
It will make airline operations more efficient by increasing fuel savings, direct routes, ease of search and rescue operations, reduced workload of flight crew and Air Traffic Controllers and cost savings due to withdrawal of ground aids.