Originally Posted by
Smythe
Has to be a twin aisle 2-3-2 design, anything bigger like 2-4-2 would compete with they already have.
Singles aisle are already stretched too far, and especially with a brand new design, a waste of a single aisle.
The issue with a 2-3-2 is the fuselage would be ovum, (aka 767) too heavy with aluminum, unlikely with composites to be cheap/easy to make.
No wonder its taking so long to decide.
My understanding is that the MMA would not have a circular cross-section, but an oval one with the longer axis being the horizontal one. This gives the extra seating width without the total bulk. The sacrifice is that the cargo area would not be tall enough to accommodate LD2s.