747-800
Boeing 747-800 now has an airline customer. Lufthansa.
The length is settled at 76,3 m, which is 5,5 m stretch and longer than A340-600 (which LH also buys) at 75,3 m.
What is the plane supposed to be like?
Boeing 747-400 can have 624 seats inside - 539 on main deck, as Boeing airport planning manuals show, and 85 on upper deck. Corsair actually has 589, and ANA once had 594.
Any stretch would bring main deck capacity over 550. Does -800 have a sixth pair of main deck doors? Where?
4 m stretch of upper deck instead of 2 m previously offered means you could have 5 extra rows on upper deck. Adding 30 seats means 115 seats. So, extra pair of upper deck exits needed as well.
Where is the extra window row above stairs?
LH plans attic galleys. Does it mean doors in rear upper deck for service?