The defence ministry on Thursday gave the preliminary approval for capital acquisition proposals worth Rs 2.23 lakh crore, including the procurement of 97 more Tejas fighters and 156 Prachand light combat helicopters as well as an upgrade of 84 existing Sukhoi-30MKI jets, in a hugely significant boost for indigenous defence production. The Rajnath Singh-led defence acquisitions council also accorded the acceptance of necessity (AoN) for 400 new towed artillery gun systems for Rs 9,900 crore to replace old Indian field guns and two types of Pinaka `area denial munitions’ for the Army.