What kind of airbase is the airport that only China United Airlines uses commercially?
Beijing Nanyuan Airport Beijing Nanyuan Airport (IATA: NAY, ICAO: ZBNY) is a military airbase that also serves as the secondary airport of Beijing. Located in Fengtai District, 3 km south of the Fourth Ring Road and 13 km from Tiananmen Square, Nanyuan Airport was first opened in 1910, making it the oldest airport in China. It is the main hub of China United Airlines.
CAL Park The CAL Park (Chinese Traditional: 華航園區, Simplified: 华航园区, "Huáháng Yuánqū") is located in Dayuan District, Taoyuan City in the Republic of China (Taiwan). The building is located next to Taiwan Taoyuan International Airport's terminals. The CAL Park is the flagship building and headquarters for China Airlines.