Also actually depends even more on what pilots you have. For example, if you have 5
fighters and only 1 bomber, it would be efficient to have way more fighters than
bombers cause else you couldn't use them, etc... It all depends on your play style,
according to which you have leveled your pilots till now...

Well your post is a little hard to understand...but that's ok.

I'm assuming you're asking how many of each airplane to buy for the Yorktown.

Let's say it can hold a maximum of 70 pilots, if it were me, I would do something like 50
FP and 20 DB. Or 55 FP and 15 DB.

It really depends on how much you can bomb. CV's have changed a lot since I had the
Yorktown, maybe you can get away with having more DBs. But in all my CV's I've used more
FP than DBs.

Try different things and see what works best for you.

Hope this helps.

lolwut?