This FOC upgrade on Mirage 2000 gives additional capability of air to ground weapon, training, helmet mounted display etc.
Air Chief Marshal B S Dhanoa calling the FOC a 'major milestone'.
This was the first time General Rawat flew in the home-made fighter jet, known for its agility, being the smallest and lightest multirole supersonic fighter jet in its class.
Around four lakh people who attended the event were treated to a spectacular flying display of fighter, civilian aircraft and helicopters.