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The aircraft involved was the prototype Boeing 747-400 (Boeing 747-451, c/n 23719, reg N661US) and was built by Boeing, and started the flight testing program for the new model, registered as N401PW, in April 1988. It was subsequently reregistered as N661US and delivered to Northwest Airlines (the launch customer for the 747-400) on December 8 ...
This Boeing 747-451 [Note 1] was the first 747-400, an improved version of Boeing's successful jumbo jet. The aircraft was the 696th Boeing 747 built and carried manufacturer's serial number 23719. [citation needed] Final assembly began at the Boeing Everett Factory, the longtime site of 747 production, in September 1987. Assembly was completed ...
The Boeing 747-400 is a large, long-range wide-body airliner produced by Boeing Commercial Airplanes, an advanced variant of the initial Boeing 747.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] (1,900 km; 1,200 mi) of additional range.
One Boeing 747-400 originally destined to fly for Northwest Airlines was sold to United Airlines which was in service until United retired its 747 fleet in 2017. Northwest was looking for manufacturers to discuss the replacement of their 100, 110 and 125 seat McDonnell Douglas DC-9 aircraft, with an average age of 35 years. [2] [3]
Northwest was one of the last passenger airlines to fly the DC-10 when its last one was retired on January 8, 2007 Northwest was also the last major US passenger airline to fly the original series Boeing 747 (pre-400 models) Northwest continued to use the pre-merger Northwest Orient livery (minus the word "Orient") until a new livery and ...
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The improved 747-400, featuring canted winglets, entered service in February 1989 with Northwest Airlines. The 747-400 is an improved model with increased range. It has wingtip extensions of 6 ft (1.8 m) and winglets of 6 ft (1.8 m), which improve the type's fuel efficiency by four percent compared to previous 747 versions. [179]
Alaska holds the all-time U.S. record. The mercury plummeted to 80 degrees below zero on Jan. 23, 1971, in Prospect Creek, north of Fairbanks.