Yecheon Airbase — Yecheon-ri, South Korea

YEC designates Yecheon Airbase, a Republic of Korea Air Force installation located near Yecheon County in North Gyeongsang Province, South Korea. Unlike most facilities carrying IATA codes, Yecheon functions strictly as military infrastructure, supporting fighter training and air combat exercises rather than any civilian passenger operations. The base has historically hosted South Korean Air Force units conducting tactical flight training over the country's mountainous interior. Public access to YEC is restricted, and there is no scheduled or charter passenger service associated with the airfield. Its inclusion in aviation databases reflects standard code allocation practices rather than any commercial or tourist relevance, distinguishing Yecheon from the vast majority of IATA-coded airports worldwide.