He assumed office from Air Marshal Kulwant Singh Gill and was succeeded by Air Marshal Rajesh Kumar.

He has also taken the Operational Electronic Warfare course in France and the Executive course on Security Studies in United States.

[1][3] Sinha was commissioned into the fighter stream of the Indian Air Force on 15 June 1980.

He has clocked over 3700 hours of flying and has experience on many different types of fighters.

He held several key operational and administrative appointments at various stages of his service including the Commanding Officer of a MiG-21 Squadron; Commandant of Electronic Warfare Range; Team Leader of AWACS Project Team in Israel; Air Officer Commanding of a front line Su-30 MKI Base; Assistant Chief of the Air Staff (Plans); Principal Director Plans, Principal Director C4ISR; Principal Director Acquisitions; Deputy Director of Operations (Electronic Warfare); Chief Flying Instructor of Basic Flying Training School; Air Force Examiner in Aircrew Examining Board and the Deputy Chief of the Air Staff (30 April 2014 – 31 December 2015).