Originally Posted by
House
Take a look at Google Maps (enter "LHR" as the search term) and you'll see around half the gates at T3 have dual airbridges, not just the A380 ones. I have board quite a few United and SQ flights through a dedicated J/F airbridge. AA, NZ and others also use them.
I've never seen AA use dual airbridges for boarding or even for servicing. I don't think it would accomplish much anyway. There are only 16 F seats in the A zone of their 772s, everyone else has to walk past 2L anyway and it would be kind of pointless to have the J passengers traipse through the F cabin just to give them a special jetbridge, only to have to rejoin the Y masses at door 2L.