Squadron leader a flying squadron is usually commanded by a wing commander, with each of the two flights under a squadron leader. However, ground-operating squadrons which are sub-divisions of a wing are ordinarily commanded by a squadron leader. This includes squadrons of the RAF Regiment and University Air Squadrons. The rank insignia consists of a thin blue band on a slightly wider black band between two narrow blue bands on slightly wider black bands. This is worn on both the lower sleeves of the tunic or on the shoulders of the flying suit or the casual uniform. Squadron leaders are the lowest
East of Scotland Universities Air Squadron East of Scotland Universities Air Squadron The East of Scotland Universities Air Squadron (), commonly known as ESUAS, is a squadron within the Royal Air Force established in 2003 as an amalgamation of "East Lowlands Universities Air Squadron" (ELUAS) and "Aberdeen, Dundee and St Andrews Universities Air Squadron" (ADStAUAS). It is based at Leuchars Station (Royal Air Force Leuchars until 31 March 15 when it was transferred to Army control), in Fife and flies a fleet of 6 Grob Tutor aircraft. ESUAS is the parent Squadron of 12 Air Experience Flight, who share the aircraft. A Squadron Leader is the