Have to say, when I finally got around to buying a second fighter bay, and getting it sent to my carrier's store, it wouldn't let me equip it. Only swap it with the fighter bay already equipped.
I'm sure I'm doing something wrong...
You can only have one fighter Hangar per ship, but these come i 3 sizes.
5, 6 and 7
The smaller size 5, only have room for one fighter at a time.
The bigger size 6 and 7 have room for two fighters at the same time, and the difference between these two are number of fighters that can be printed.
So on the size 6 and 7 you can have two different kinds of fighters, or use the same blueprint for both slots.
And the biggest reason for having a size 6 or 7 fighter hangar is to be able to send out a new fighter when the first one is destroyed, and often, this fighter last long enough for the 3D printing process to have replaced the lost fighter.
This is strange restriction, as you can put multiple SRV hangars on the same ship.There are plenty of these sort of strange differences between Fighters and SRVs..
Why can Fighters be 3D Printed, but not SRV?
Why can you telepresence Fighter but not SRV (I do not count telepresence when you enter the turret as you are still doing that form the SRV)
Why do Fighter hangar require less power than the SRV Hangar?