Answer - Rakesh Kumar Singh Bhadauria
Now the current CAS is Air Chief Marshal Rakesh Kumar Singh Bhadauria who took office on 30 September 2019, following the retirement of Air Chief Marshal Birender Singh Dhanoa. This position was held by an Air Commodore (1919–1923), by an Air Vice-Marshal (1923–1929) and by an Air Marshal (1929–1965).