At the moment there are about 35,000 flights to and from the Walloon airport every year. Bierset’s plans led to protests in Belgian and Dutch Limburg. Maastricht, Eijsden-Margraten, Gulpen-Wittem and Vaals, together with eight Flemish municipalities, objected to the expansion plans. According to HbvL, these municipalities are still investigating whether they will object to the new permit.