The British Vice-Chief of the Air Staff (VCAS) was the post occupied by the senior Royal Air Force officer who served as a senior assistant to the Chief of the Air Staff. The post was created during World War II on 22 April 1940 and its incumbent sat on the Air Council. It was abolished in 1985 when the post's responsibilities were combined with those of the Assistant Chief of the Air Staff (Policy) and the Assistant Chief of the Air Staff (Operations) to create a single post, the Assistant Chief of the Air Staff.
The Vice-Chief was responsible for defining the operational requirements for the RAF and conducting wider strategic planning.[1]