Originally Posted by
vintage ATCO
My own view is that if it is intended that the ATZ should remain extant during the closure period then it should be specifically mentioned in the NOTAM or your quote applies.
No that wouldn't be allowed or be reasonable (well, actually you can notam anything you like, doesn't mean it holds water!). You cannot have a chunk of airspace and then say "sorry, we are going for lunch, nobody may use that airspace in the mean time". In other words no point in having an ATZ if no-one is allowed to fly in it! But no doubt some owners of train sets might be upset at the thought!