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 747. First introduced as the Advanced Series 300 and announced at the Farnborough Airshow in September 1984, it aimed at a 10 percent cost reduction with more efficient engines and 1,000 nautical miles more range. Northwest Airlines was the launch customer, ordering ten aircraft on 22 October 1985; the first was rolled out on 26 January 1988, flew on 29 April 1988, was certified on 9 January 1989 and entered service with Northwest on 9 February 1989. It keeps the 747 airframe with the stretched upper deck of the 747-300 and adds six-foot winglets, a choice of PW4000, CF6-80C2 or RB211-524G/H turbofans and a two-crew glass cockpit. Typically seating 416 passengers over 7,285 nautical miles, it is the most-delivered 747 variant, with 694 delivered from 1989 to 2009, and it has been superseded by the 747-8.