Posibility to shot down heavy helicopter (that is almost uncontrolable by pilot) with 4 hits from 30mm cannon is unplayable.
Yes, its very realistic, and the experienced APC shooter hits 5 shoots in a row to your flying elephant and destroy your tail rotor and you cant do anything because machine is ultra heavy.
I agree that it is a flying tank, but 3 rpg hits (20 seconds + experience + lucky, should be two maybe) vs 4 hits from APC (2 seconds + lucky) is imba.
Posibility to repair upside rotor (and other broken parts) with a repair tool would be a good addition too. Especially if pilot was killed by sniper and heli falls between buildings.
Another point of discussion is sniper damage to vehicle body, btw snipers see that helicopter is in-fire, and work as stingers most of times, that is little confusing. I can understand minigunner that shoot full 100 mag to heli, but the sniper rifle that kills you because so easy to target with his gun when you already on your main - its unexpected.

