Squadron leader Squadron leader Squadron leader (Sqn Ldr in the RAF ; SQNLDR in the RAAF and RNZAF; formerly sometimes S/L in all services) is a commissioned rank in the Royal Air Force and the air forces of many countries which have historical British influence. It is also sometimes used as the English translation of an equivalent rank in countries which have a non-English air force-specific rank structure. An air force squadron leader ranks above flight lieutenant and immediately below wing commander and it is the most junior of the senior officer ranks. The air force rank of squadron leader has a
Royal Air Force Antarctic Flight from Mawson station. One was lost on the return voyage, but the other served in Antarctica over a number of years until it was sold after the end of the 1958/59 season. Another two Austers were operated by the RAF and RNZAF (as "Auster Antarcticas") as part of the Commonwealth Trans-Antarctic Expedition in 1955-58. Royal Air Force Antarctic Flight The Royal Air Force Antarctic Flight was an independent flight of the Royal Air Force organised to support the Norwegian–British–Swedish Antarctic Expedition in 1949-50. It was the first RAF unit to operate in Antarctica. The Flight was led by Squadron-Leader George