Almost all key acquisition and development projects are running behind schedule, Raha said as he sounded a note of caution over its implication for IAF's fighting capability.
But the air chief at the same time expressed hope that, under the new government at the Centre, steps would be taken to rectify the situation.
"We have quite a few fleets which are on their last legs. The draw down has to be prevented by quick induction of Medium Multi-Role Combat Aircraft (MMRCA) as well as Light Combat Aircraft (LCA)," the air chief said at an interaction with the media ahead of IAF's 82nd anniversary.
"After all Indian Air Force is India's air force, not my air force. It is the government's responsibility, the responsibility of the nation to provide whatever is necessary. We are concerned that it is not coming on time," he said.
Also Read
Talking about the projects that are caught up in delays, he cited the Fifth Generation Fighter Aircraft (FGFA), which India is developing along with Russia and also said that there was an urgent need to replace the vintage light helicopters of the Army as well as air force as their flight safety record is not good.