Helicopter Damage.

[Mobhack]

Apaches, Hinds etc have armour - this stops a certain level of AAA fires from having any effect. The hit simply becomes a no-effect one. But if any does get through causing damage, planes and helos RTB. This has been the case since SP1/2/3 days.

Cheers
Andy

[pdoktar]

Only certain parts of AHs are armored. But the one biggest part isn´t, the rotor. So burst of small arms will damage it, and ricochets may damage other vulnerable top parts, like the rotor carriage.