These units are only composed of rifle squads and have no AA strength.
And basing on my experience, enemy AA capability alongside the infiltration path does not affect heliborne operations at all.
There is some problems I am sure because I've noticed this also in Piero Falotti 1992 scenario. That scenario is full of airmobile units and transport helos. I've noticed that I couldn't encircle some units because strange path logic - those landings sites were perfectly logical to me.
Another problem in Europa 1947 scenario, when enemy air units bombard hex with a port, my naval units defends and of course all others units present defends, it is shown in report but they are not shown in list of destroyed, disabled equipment report, like that they are not there....
OK, I am fine with that But, obviously Port Attack will show ships in that report but why they are not shown in bombarding mission when they defend but cannot be destroyed or damaged? If Port Attack uses different code then they should not defend in bombarding mission (like that they are not there, so in port and you need Port Attack to attack only them...)
Port Attack was introduced obviously because in TOAW COW for example ships in port with some units present were extremely hard to destroy, you could damage some ships but very hard to destroy them. I remember Braunschweig scenario that require at some point that you attack some Caspian Soviet ships and I employed hundreds of Ju87 etc just to damage 1 or 2 ships...
Don't want hijack your thread, back to the topic, there is some problem with airmobile units because in most instances they could be transported to mountains etc without problems. Something is there in old Norm's code