The new antiaircraft is horrible, especially against fast planes.
Pls for the love of GOD BUFF AA, i jsut got done with a game of normandy axis where p47s were being spammed to hell and back , put a full aa clip into a p47 that was coming straight at me and didnt do jack shit.
I play both sides on Normandy, and I do agree that the AA needs to be fixed. I use the P47 quite a bit and have noticed it takes a lot to be brought down by the AA. Especially recently it usually takes 2 people using AA simultaneously to really be effective against it.
My suggestion for a fix is to either make it function as a flak burst AA so that shells that pass close to it still detonate and do some damage, which increases your overall chance of disabling it.
OR
Considering that 2 AA units can be built by one player, make the AI in your squad able to operate the second AA gun. They will attempt to shoot the same target you do, but with less precision. This not only helps with damage output, but also helps with immersion.
Both of these suggestions can still be bypassed by extraordinary pilots flying low to the ground, HOWEVER, rockets can be quite difficult to use from that angle, making the P47 and other planes whose primary armament are rockets much less effective.
I see this all the time, but dont seem to have a problem.
Played a round in my flak panzer last night for shits and giggles and annihilated the enemy pe-3 with a short burst several times
Yeah, my experience is that german AAs are completely okay.
I tried US ones few days back, they did completely nothing.
Interesting, because the american one is the one ive most used and it wrecks.
Granted its been vs japanese planes made of paper. Havent used in normandy
Like, I used mericans only one time. Tried to shot down AI bombing run. I did absolutely nothing so I didn’t bother to try use them again.
And I was pretty consistent with German ones. Never had any problems with them.
When I fly, what takes me down are:
70% of the time, anti air… Yes, they work.
30% an enemy fighter that I didn’t see and managed to snuck up on me.
no 10% gravity? 
yes, they are shit, at the very least they should give more powerful AA to eng 2 squads
I’ve noticed that the SPAAs seem to behave a little bit differently in terms of damage compared to the stationary AA guns though.
Gravity used to be a good 80%! (mostly evil trees!) But with alot (lot lot lot) of practice, I finaly made peace with my archnemesis, the ground 
I still lose to gravity every now and then (5%)…or greed. Part of the last second rendering, sometimes I see a clump of infantry and want them!..then hello tree
M45 quadmount pls.
And of course the real ones, they could shoot at a tank or infantry.