Royal Australian Air Force it was decided by the Air Board that the RAAF would adopt the rank structure that had been implemented in the RAF the previous year. As a result, the RAAF's rank structure came to be: Aircraftsman, Leading Aircraftsman, Corporal, Sergeant, Flight Sergeant, Warrant Officer, Officer Cadet, Pilot Officer, Flying Officer. Flight Lieutenant, Squadron Leader, Wing Commander, Group Captain, Air Commodore, Air Vice Marshal, Air Marshal, Air Chief Marshal, Marshal of the RAAF. In 1922, the colour of the RAAF winter uniform was determined by Williams on a visit to the Geelong Wool Mill. He asked for one dye dip fewer
University of Birmingham Air Squadron University of Birmingham Air Squadron The University of Birmingham Air Squadron, commonly known as UBAS, is a squadron within the Royal Air Force established in 1942. It is based at RAF Cosford, Shropshire, and flies a fleet of five Grob Tutors. In 2009 the squadron upgraded the aircraft to the Grob Tutor EA which has an advanced avionics suite. The Squadron has four Flights, A, B, C and D; each with a student Flight Commander who holds the rank of Acting Pilot Officer. UBAS is also the parent squadron of 8 Air Experience Flight, who jointly fly UBAS' Tutor fleet.