IAF set to retire Abhinandan Varthaman’s MiG-21 squadron by Sept end
India | Sep 20, 2022, 12:21 PM ISTAbhinandan Varthaman MiG-21: 'Sword Arms' is one of its four remaining squadrons of ageing MiG-21 fighter jets. The No. 51 Squadron is to be retired by the end of September.