Originally Posted by
chris18london
Not sure it's possible to have a jetbridge upstairs on a 747 though, the way they open out I think they're just emergyency exits, I could be wrong though. But as everyone else says, two on the same aircraft, sure.
I think
Caymanian was wondering whether you could use the two A380 airbridges on a 747 main deck, which you can (ie. the A380 upper deck airbridge can be lowered).
The 747 upper deck doors are emergency exits only.