The take-off and landing site is considered an occupation of the public highway. To do this, you need to obtain authorisation from the relevant local authority. Furthermore, the Brussels-Capital Region is occupied by numerous official institutions such as the EU institutions, parliaments, royal palaces, prisons, etc. As there are regular activities linked to these institutions, it is important to guarantee their safety. This is why we always seek guidance from the police, who have an overview of these activities. It is therefore very important that the police also grant authorisation.