Maintaining that Indian Air Force is "not my air force", he said it was the government's responsibility to review all the processes.
Almost all key acquisition and development projects are running behind schedule, he said as he sounded a note of caution over its implication for IAF's fighting capability.
"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.
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"They are reviewing every project. Accountability is being fixed. There is a great urgency," he said, adding that all three service chiefs can meet Prime Minister Narendra Modi one -on-one every month to discuss matters of importance.
"It's been always a mystery the way incursions take place and the way they get timed with various visits... It's nothing new, it remains a mystery for all of us," he said.
However, making it clear that India was "not giving ground to anyone", Raha blamed the frequent face-offs between Indian and Chinese troops along the LAC on differences of perception between the two countries over the actual position.