Science Fair Project Encyclopedia
Senior Aircraftman (SAC) (or Senior Aircraftwoman (SACW)) is a rank in the Royal Air Force, ranking between Leading Aircraftman and Junior Technician (although SACs in non-technical trades progress directly to corporal) and having a NATO rank code of OR-2. The rank, which is non-supervisory, was introduced on 1 January 1951. The rank badge is a three-bladed propeller.
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