Split/Bandbox of en-route sectors in Europe
I have heard a few people saying that en-route sectors in countries like Spain or France are always open regardless of the level of traffic. No concept of bandboxing sectors when it is quiet and splitting them when it gets busier to optimise resources. At the same time, I have heard sectors are split/bandboxed in at Maastricht. Is that the case? We do quite a bit of splitting/bandboxing in my neck of the woods.
I would appreciate if somebody could enlighten me about that point.
Thank you very much!