wiggy
As eckhard says the 744 was FL 451 but I was only ever in the position on that machine once where weight etc made it possible to go up here but because of time remaining to destination it didn't make sense to do so.
Yes, only once for me too. Lagos-LHR with about 80 passengers. We were over northern Algeria at the time (so about 2.30 to TOD) and thought if we don't do it now, we never will.