Double-decker planes are not new, and no I’m not referring to the fact that the Boeing 747 is nearly 40 years old, some of the earliest passenger planes in existence were double-deckers.
Some double-decker planes are hiding in plain sight, and to show people that there’s more of them than just the 747 and A380 we’ve rounded up a list of all other double-decker passenger planes currently in service.
1 Airbus A340-600
Yes, this normal looking plane is actually a double-decker in disguise. Towards the middle of the plane you will find a staircase that leads downstairs to a "basement" that has a number of toilets and a bedroom for the cabin crew.