Timz From United States of America, joined Sep 1999, 6835 posts, RR: 6
Reply 1, posted (13 years 11 months 3 weeks 19 hours ago) and read 7393 times:
Less than you think. Following is from graphs in the Boeing publication 747-400 Airplane Characteristics for Airport Planning, dated Oct 1994:
Sea level standard day (59 deg F, 29.92 inches Hg), no wind, level runway, air conditioning off (except one pack can be powered by the APU), PW4056 engines: minimum runway length of 5500 ft allows a takeoff weight of 635,000 lb, 6000 ft allows 665,000 lb, then a fairly straight line from there to 10,100 required feet for 850,000 lb. These are runway requirements, which are of course longer than the ground run.
Same publication gives payload-range graphs: it seems that aside from runway strength problems a 744 could carry 400 pax and bags (but not much freight) off of SNA's 5700-ft runway nonstop to New York, or the same payload out of LGA's 7000 ft to Europe. That includes reasonable reserve fuel.
SW737-700 From , joined Dec 1969, posts, RR:
Reply 2, posted (13 years 11 months 2 weeks 6 days 21 hours ago) and read 7342 times:
Thanks Timz! I heard that the 747-400 could take off in a short distance with a light load but I never would guess full of passangers. Thanks again for all the specs. it was exactly what I was looking for!
John From United States of America, joined Sep 1999, 1374 posts, RR: 5
Reply 3, posted (13 years 11 months 2 weeks 5 days 21 hours ago) and read 7290 times:
5700 feet is WAY TOO SHORT a runway for a 744 w/400 pax SNA-JFK. Absurdly ridiculous, IMO, as well as dangerous. It might indicate this on the minimums chart, but what airline, in their right mind, would ever attempt this? Has a 744 ever diverted to SNA or done any test runs there, prior to its delivery?
Iainhol From , joined Dec 1969, posts, RR:
Reply 4, posted (13 years 11 months 2 weeks 5 days 20 hours ago) and read 7281 times:
The problem with SNA is to have that aircraft land there, you have to get it up to V1 and stop with so many feet to spare. A 747 would not be able to that at SNA. But we alre taught at pilot school specs are to sell the plane times the spec by 1.5 and that is closer to the deal!