Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
747-400 Minimum Take Off Length  
User currently offlineSW737-700 From , joined Dec 1969, posts, RR:
Posted (14 years 2 months 3 weeks 3 days 19 hours ago) and read 7912 times:

I would like to know if you where taking off in a 747-400 at sea leval with a light load what would be the length that the 747-400 would take on the runnway intil the gears lift off the ground?

4 replies: All unread, jump to last
 
User currently offlineTimz From United States of America, joined Sep 1999, 6902 posts, RR: 7
Reply 1, posted (14 years 2 months 3 weeks 1 day 16 hours ago) and read 7792 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.


User currently offlineSW737-700 From , joined Dec 1969, posts, RR:
Reply 2, posted (14 years 2 months 3 weeks 18 hours ago) and read 7741 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!

From,
SW737-700




User currently offlineJohn From United States of America, joined Sep 1999, 1374 posts, RR: 5
Reply 3, posted (14 years 2 months 2 weeks 6 days 19 hours ago) and read 7689 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?

User currently offlineIainhol From , joined Dec 1969, posts, RR:
Reply 4, posted (14 years 2 months 2 weeks 6 days 18 hours ago) and read 7680 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!
Iain


Top Of Page
Forum Index

Reply To This Topic 747-400 Minimum Take Off Length
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
Boeing 737 Minimum Take-off/Landing Requirements posted Fri Nov 3 2006 16:22:57 by NZ8800
What Is The Maxima Take Off Length For 747sp posted Sun Aug 24 2003 06:03:43 by 747400sp
B763 Take Off Length posted Sat Nov 17 2001 17:02:49 by UPS763
Minimum Take Off Distance For The 757 posted Wed May 16 2001 07:32:43 by ILUV767
747-400 Take Off Speed? posted Sun May 9 2004 18:32:38 by Wardialer
Minimum 737-600 Take-off Thrust? posted Sat Oct 29 2005 00:08:18 by MerlinIIIB
B747-400 Take-off Speed posted Sat Mar 8 2003 23:51:22 by Wardialer
Slat Retraction During Reverse Thrust? 747-400 posted Sun Nov 5 2006 00:29:24 by Ajaaron
Is Re-engining A 747-400 With Trent 500s Possible? posted Sat Nov 4 2006 22:59:28 by LTU932
Heavy Take-off With Tailwind posted Fri Oct 27 2006 20:02:52 by BA84

Sponsor Message:
Printer friendly format