The European Union Aviation Safety Agency(EASA) is an agency of the European Union with responsibility for civil aviation safety. It carries out certification, regulation and standardisation and also performs investigation and monitoring.

The monitoring in member states is done by the National Supervisory Authority (NSA, sometimes referred as the Competent Authority) which in most states reside under the Minister Of Transport.

Reg 2017/373 set out the obligation to have a management and safety management system in place.

To ensure proper software working of technical equipments, a Software Assurance Level (SWAL) regulation is in place within CIR 2017/373, while ensuring interoperability between the systems and constituents used to provide air traffic management (ATM) and air navigation services (ANS) Europe also have a set of regulations in place