Boeing 747-400

The Boeing 747-400 is a large, long-range wide-body airliner produced by Boeing Commercial Airplanes, as an advanced version of the original Boeing 747. The model, first introduced as the Advanced Series 300, was announced at the September 1984 Farnborough Airshow, targeting a 10% cost reduction with more efficient engines and 1,000 nautical miles [nmi] range increase. Northwest Airlines became the launch customer with an order for ten aircraft on October 22, 1985. The first 747-400 was rolled out on January 26, 1988, made its maiden flight on April 29, 1988, received type certification on January 9, 1989, and entered service with Northwest a month later on February 9, 1989.