Singh was the first officer to have kept his flying rank until he became CAS. He had flown over 60 different types of aircraft from Pre-WWII era biplanes to Folland Gnats and de Havilland Vampires. He also had flown in transports like the Lockheed L-1049 Super Constellation. Singh remained active and worked for the welfare of air force veterans, contributing twenty million rupees from his personal wealth to set up a trust to this end. He was considered a father figure of the service.