 Effective 2 April 1948 the name of the rating became aviation electronics technician (AET); the abbreviation was changed to (AT) on 9 June of the same year.A separate rating, aviation electronicsman was absorbed in 1955.The former ratings of aviation fire control technician (AQ) and aviation antisubmarine warfare technician (AX) were absorbed into the AT rating effective 1 January 1991.