Air Force Specialty Code
（重定向自Technical Controller）
The Air Force Specialty Code (AFSC) is an alphanumeric code used by the United States Air Force to identify an Air Force Specialty (AFS). Officer AFSCs consist of four characters and enlisted AFSCs consist of five characters. A letter prefix or suffix may be used with an AFSC when more specific identification of position requirements and individual qualifications is necessary. The AFSC is similar to the Military Occupational Specialty (MOS) used by the United States Army and the United States Marine Corps or enlisted ratings and USN officer designators and USCG officer specialities used by the United States Navy and the United States Coast Guard.