There was a website that I can no longer find on the web but it is archived on Wayback machine.
Try these links:
!UranusJay's Homepages! - SITEMAP
!UranusJay's Homepages! - AIR - Aircraft Technical Data
!UranusJay's Homepages! - AIR - Aircraft Technical Data
You may need to click on 'Impatient'. If the links don't work google in 'Wayback Machine' or type in:
http: //www. archive.org /web .phb
(without the spaces I have inserted).
To get the main menu type in
http: //www. januranusjaymartin.de /uranusjaysitemap .html
next to take me back.
Go down to AIRDOCUMENTS & click against the type you want the technical data for on the right.
Does anyone have any data for the 787 or 747 800? Also, although it doubtless is confidential, are there any published guarantees for the A350?