Sqwak7700 : Does anyone know what those doors are under the inboard leading edges of the wings, close to the fuselage? I thought I had heard that the packs are in the wings, so maybe they are pack inlet doors?
These doors are the Airconditioning pack outlets, the intake is via the large NACA-slyle inlets in the belly fairing.
left outflow doors closed, right doors opened, same for the inlets
Moving the packs to the wing and kinking the wings front spar backwards enlarges the front cargo hold significantly. This is quite important for an airplane having two decks with passengers and just one for their luggage...