Group captain the wing commander and group captain command pennants are triangular in shape. The rank of group captain is also used in a number of the air forces in the Commonwealth, including the Bangladesh Air Force, Ghana Air Force, Indian Air Force (IAF), Nigerian Air Force, Pakistan Air Force (PAF), Royal Australian Air Force (RAAF), Royal New Zealand Air Force (RNZAF), Sri Lankan Air Force and the Trinidad and Tobago Air Guard. It is also used in the Egyptian Air Force, Hellenic Air Force, Royal Air Force of Oman and the Royal Thai Air Force. The Royal Canadian Air Force used
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.