Indian Air Force has upgraded its fighter plane MiG 29. The duration of sorties of MiG-29 combat aircraft of Indian Air Force (IAF) is set to increase soon. The flying duration of the aircraft is increased twice from the present flying time of 45 minutes to 50 minutes. Upgradation work includes features like air-to-air-refilling, head-up display change, helmet monitoring system, additional combat gears.