Hi, I'm a light plane pilot and instructor, but I have yet no experience of helicopters. I instruct one day a week for the fun of it, but my main professional occupation has not much to do with aviation. My plan is to purchase a helicopter for personal transportation and commuting (R44 probably). Unfortunately, there is no hangarage available at the heliport in Paris (France!), close to which I leave. Grass parking is available though. As no helicopter seem to be permanently parked on grass at that heliport, I wonder if it's allowed/recommendable/safe not to hangar a helicopter?