I never read the Avengers comics, the carrier should have had at the very least a 3-1 redundancy, 12 high lift fans with only needing 4 to remain aloft, and should have emergency backup rocket thrusters.
It was cool looking but the one from another movie from the 1930’s, the one with Angelina as the captain was more functional. Sky Captain I think it was.
If it has 3-1 redundancy then it can’t be attacked as easily and you don’t have a handy source of plot tension. In a comic book world where you’re going to be seeing something 4 or 5 times a year things like that need weak spots, huge gaping weak spots that get exploited every year. It’s nice to have a place the good guys can rest safely from the bad guys, but it’s more important that it need to be saved FROM the bad guys occasionally.