NEW DELHI (APP) - The Indian Air Force has grounded its entire fleet of 100 Sukhoi jet fighters after a crash of such plane two days back in Rajasthan, an IAF official said. Precautionary checks are being conducted of each jet fighter, he said. India lost its two Su-30 jet fighters this year, one on Monday last and other on April 30. In all, IAF has lost 13 jet fighters of different types this year during air crashes. Sukhoi jets were inducted into IAF in 1996.