OP said "However I still feel the weight of Operation Flashpoint" (in movement)
NO! You feel the weight of at least 40kg of gear on you (without weapon) :D
If heli engine stops, you can land with it with no problem (pro pilots i RL). You can find videos on YT that show how to do that. I used that to land damaged choppers in arma 2. Please, whoever started this topic and one with "jumping" not to troll.