2020年7月26日 · Back in 1986 when the 747-400 was still under development Boeing studied a ULH 747 called the 747-500 that could be able to fly up to 8,700 nmi (16,000 km), which would allow airlines to fly routes such as LHR-SYD, JFK-SYD, EWR-SIN and LAX-SIN and would have been the 777-8X of its time and could have possibly been bought by airlines such as QF and SQ. Do you guys know why the 745 was cancelled?

2018年7月10日 · The 747-8 has been a bit of a disaster for Boeing, when you think how the 747 Classic was designed, built and flown in just over 26 months in the late 1960s. How did they get it so wrong? Basically, in the end creating a cargo only 747-NEO that no-one wanted. Perhaps a better route to a lot more sales, would have been a simple 747-400 upgrade; the 747-500. It would have reached the airlines a ...

1999年3月11日 · The 747-500 will be a stretched 747-400 with a wing root insert increasing the span. The MTOW will be over 1,000,000 lbs. and looks to be ending up at 1,060,000 lbs. The aircraft will sport the new McDonnell Douglas MD11 inspired trailing edge wedge which in tests has shown roughly a 7% increase in efficiency. The aircraft will not only seat more people but will have approximately 400-500 ...

2018年7月11日 · The 747-500 would have failed even more because it would not have been that advanced compared to the A-380 making it more of a handicap. I disagree (and so do many on this board).

2000年12月7日 · The first order for B747X Stretch would likely be UAL or JAL as they both have high passengers demand. UPS, FedEx and Polar Air Cargo are likely to order some as well. The 747X was named the B 747-500 and the stretched version was named the B 747-600 in 1996 before Boeing actually cancelled the plan..

2004年8月5日 · Actually, Continental retired their last 747-200 on March 2, 1999, the same day they also retired the 737-200...

2006年1月5日 · The 747-500, 747-600, and 747-700 (nee 747-X) were all formal design studies submitted to customers. So while they are "available" since none of those programs ever formally launched, Boeing choosing 747-8 is not completely left-field as it: Ties into the 747-800, which is next in the design study lineup (though this one did launch)

2007年6月1日 · The L-500 would also have come along about the same time or shortly (~1 year?) after the 747. I was around back then but I was very young so I don't remember any details. I vaguely remember a model of the double-deck L-500 pictured in a magazine or newspaper, complete with two rows of pax windows. So what gives?

2000年1月23日 · I don't know, nor do I know why Airbus keeps stretching the d*mn things. The only real highlights about the new 'big brothers' are: The -500 is the farthest reaching jet in the world, farther than a 747-400. The -600 is the longest jet in the world, longer than a 777-300. The wings are newer, made of lighter composites, and larger. The engines are higher-bypass, not those little jobs tucked ...

2013年9月28日 · The 747-500/600 may have sold a little bit, but unless we're assuming some significant alternate course of economic history, sales probably would have stalled out.