In 2000 the Royal Air Force changed the rank to Senior Aircraftman (Technician), (SAC(T)). The rank of senior aircraftman (SAC) was introduced on 1 January 1951. Leading Aircraftman/Pilot Under-Training Ernest Aubrey Griffin. There were three grades&colon; leading aircraftman (LAC), aircraftman 1st class (AC1) and aircraftman 2nd class. Thorn had teamed up with leading aircraftman Frederick James Barker from Bow in London. The Royal Australian Air Force also uses both aircraftman and aircraftwoman. Junior Ranks&colon; Recruit, Aircraftman, Leading Aircraftman. T. E. Lawrence was stationed here as Aircraftman Shaw. In July 1943, Benn enlisted in the Royal Air Force as an aircraftman 2nd Class. It is likely he was shot down by Aircraftman Second Class Gouldson from Riddlesworth's Wellington. During his national service Sheard was a Royal Air Force aircraftman. Leading aircraftman (LAC) or leading aircraftwoman (LACW) is a junior rank in some air forces. It sits between aircraftman and senior aircraftman, and has a NATO rank code of OR-2. Aircraftman ranks below leading aircraftman and has a NATO rank code of OR-1. An aircraftman in the cadet stage is called aviator (recruit).