Ok - yet another question for the floor.....
On the subject of ATZs I've got two questions:
1. Why do some aerodromes have them and some don't? Does it indicate the level of activity?
2. Is it correct that if an aerodrome has an ATZ and is only operating an air/ground service - eg White Waltham - they cannot give you permission to enter their ATZ. Therefore, if I want to transit their ATZ en route somewhere else I should simply tell them that I am doing so rather than ask for their permission to do so?
