Following the standard utilization of the wide-body 747 on the highly profitable Trans-Pacific – USA routes, China Airlines introduced its first two 747-100s (ex-Delta Air Lines aircraft) in 1976 and immediately placed them on its Hong Kong-Taipei-Tokyo-Honolulu-Los Angeles route. Shortly thereafter, four brand new Boeing 747SPs (Special Performance) were introduced in 1977. Due to political pressure, Japan ended its diplomatic ties with Taiwan in 1972, and all flights between Taiwan and Japan were stopped. The 747SP aircraft made it possible for China Airlines to fly daily nonstop services from Taipei to its North American destinations without stopping over in Japan. It also allowed the airlines to introduce flights to Saudi Arabia and South Africa. In 1979, the airlines switched all operations from the smaller Taipei Songshan Airport to the newly built Chiang Kai-Shek International Airport (now Taoyuan International Airport). Following the introduction of 747-200s, the airlines introduced its first European destination, Amsterdam.