The air force has already begun phasing out MiG-21s in batches and they would be out of service by the end of the decade.
The MiG-27s will be phased out next and the MiG-29s are being upgraded. All these aircraft are stationed at frontline bases across the country - from Hashimara in the east to Jodhpur and Jaisalmer in the west.
IAF pilots say, pilots in neighbouring Pakistan have been flying sophisticated fighter aircraft, while the Indian counterparts are flying aged MiG aircraft.