It wasn't a Bug caused by tanks. It was caused by setfog bug.

Ok. I'll do it. :-)

I know. But when? And why should i wait for this? Why not using a Vanilla Arma 3 Version with stairs provided by BI? If you don't use Mod's you have a way better performance in-game. Why should i ignore this fact? Would you break down your in-game performance and play with 15 fps instead of 60 fps?

Negative. They are only Wooden Structures. That breaks easily with three 40 mm grenade salvos. I need a Stair or Ladder with metal/steel/concrete material that fits to the theme of a heavy fortified tower.

If you sit in a little Bird and your Tail Rotor says Goodbye, you WANT to jump!
Why should'nt a heli pilot have the chance to save his life but an airplane pilot can?