| Assistant Chief of the Air Staff | |
|---|---|
|   Ensign of the Royal Air Force  (ACAS Command Flag) | |
| Ministry of Defence | |
| Style | Air Vice-Marshal | 
| Abbreviation | ACAS | 
| Member of | Air Force Board Civil Aviation Authority Board | 
| Reports to | Chief of the Air Staff | 
| Appointer | King Charles III | 
| Formation | c. April 1938 | 
| First holder | Air Chief Marshal Sir Anthony Skingsley | 
| Website | Official website | 
The Assistant Chief of the Air Staff (ACAS) is a senior appointment in the Royal Air Force. The current ACAS is Air Vice-Marshal Suraya Marshall.
The post was originally established circa February 1938, but without being made a member of the Air Council. [1]
The ACAS post was re-established in 1985 by eliminating the Vice Chief of the Air Staff and combining the Policy and Operations two star assistant chiefs. In 1992, ACAS became a member of the Air Force Board. The ACAS is responsible for "assisting the Chief of the Air Staff in generating a balanced and integrated Royal Air Force capability and for maintaining the fighting effectiveness and morale of the Service including the development of policy." [2] One of the many duties of the ACAS is to sit on the board of the Civil Aviation Authority as a non-executive member. [3]