=2D----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Add to those already mentioned: Carbon Brakes Composite Floor=20 lighter alloys used in the wing structure better air distribution within the cabin There's much more I'm sure - the -400 really is a very different aircraft.= =20 David On Sunday 25 May 2003 19:16, Chris Wallace wrote: > Hello all, > > In addition to the winglets, other differences of the -400 > over the -300 include an electronic cockpit, eliminating the > FE; a redesigned fillet at the forward wing root; and a wing > of a different airfoil section. The -400F has the winglets > but no extended upper deck whilst the Japanese domestic > version, the -400D, has the extended upper deck but not the > winglets. Only the -400 is in production and the Japanese > don't need the range-extending qualities on their short range > shuttle flights. There are other variations out there but > escape my recollection. > > Chris > > >Is the only difference between the 747-300 and the 747-400 > > the winglets? > > >Could a 743 be converted into a 744 with the addition of > > winglets? =2D----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2 (GNU/Linux) iD8DBQE+0TQ8KsvwCXwmAPgRAjU1AJ4m2y4ZcbbNhNa3aNEH2jlFr6+FuQCeI2TU hgpwbchhEvXJMJSJ59VMybg=3D =3DKS/9 =2D----END PGP SIGNATURE-----