I'm very positive this one's on here a MILLION times, but PLEASE make it a top priority. All helicopters will explode if they are touching the ground and happen to roll onto their side or upside down. Always. This seems absurd in the case of the ever-difficult autorotation without antitorque, where rollovers at speeds of 1 km/h are common. Please make this so there is some force or speed factoring into this mechanic. If it is a rather gental roll, please allow the crew to survive and merely break the main rotor. Perhaps have an option to flip a Hummingbird back over, as this seems rather possible.