When I attach a helicopter on top of a vehicle which has landing zone, the engine of helicopter is not turning off properly although I select Engine OFF from menu and it replaces that action with Engine ON which means actually engine should be off. Rotors are still turning in that state without an end...
Opposite of this also happening, let's say helicopter is attached to another vehicle while its engine was off. In such case when I select engine ON action, the sound of engine starts coming but the rotors are not rotating..