1. Without prejudice to the possibility for Member States to finance the provision of air navigation services covered in this Article through public funds insofar as it is in line with Treaty rules on competition where applicable, charges for air navigation services shall be determined, imposed and enforced on airspace users.
The charging scheme set up under this Article and Articles 30 to 32 shall be consistent with Article 15 of the Chicago Convention. For en route charges, the charging scheme set up under this Regulation and the implementing acts referred to in Article 33 and Eurocontrol’s charging system for en route charges shall be consistent.