Description Phan Rang Air Base (also called Thành Sơn Air Base) is a Vietnam People's Air Force (VPAF) (Khong Quan Nhan Dan Viet Nam) military airfield in Vietnam. It is located 5.2 miles (8.4 km) north-northwest of Phan Rang – Tháp Chàm in Ninh Thuận Province.
Initially built by the Imperial Japanese Army about 1942, the airfield was also used by the French Air Force (French: Armée de l'Air) during the First Indochina War then abandoned in 1954. The United States rebuilt the airfield in 1965 and it was used by the Republic of Vietnam Air Force (RVNAF) and the United States Air Force during the Vietnam War in the II Corps Tactical Zone of South Vietnam.
It was seized by the People's Army of Vietnam (PAVN) in April 1975 and has been in use by the VPAF ever since.