As normal, IFixit has already completely dismounted their MacBook Air.
Like us, they were very impressed by the ingenuity shown by the designers of this machine.
Excellent news, if you exclude the screen the machine is very simple to disassemble. However you will need patience to reach the end since 88 screws need to be removed.
http://www.ifixit.com/Guide/First-Look/Mac/MacBook-Air
[translation by crispin]