Austria, Bosnia & Herzegovina, Croatia, Czech Republic, Hungary, Slovak Republic and Slovenia have signed an agreement to create the "Functional Airspace Block – Central Europe" (FAB CE). This is an important step towards achieving the Single European Sky. In fact, the other European Union Member States are expected to sign similar agreements in the coming year.

The creation of functional airspace blocks is one of the cornerstones of the Single European Sky. The political objectives of the Single European Sky legislation adopted in 2004 is coming into reality with Member States taking the necessary steps to ensure the creation of functional airspace blocks, or FABs. The agreement reached marks the realisation of the fourth FAB in Europe. For air navigation service providers, the creation of the functional airspace blocks opens cooperation opportunities, which will facilitate a response to the new binding performance targets established under the Single European Sky legislation. FAB CE will involve a high density airspace with main traffic flows East-West, often crossing multiple Air Navigation Service Providers towards the northern part of the airspace. Traffic increases to the western and southern parts of the FAB.

The FAB CE agreement creates the framework, general conditions and governance under which the contracting states intend to ensure air traffic management and the provision of air navigation services in the context of the Single European Sky legislation.

FAB CE will be governed by a Council (the decision-making body) representing the interests of both civil and military aviation with sub-committees:

• Joint Civil Military Airspace Coordination Committee (JCMACC) for strategic coordination of national airspace management and airspace design policies, air traffic flow and capacity management processes and civil-military cooperation.
• The National Supervisory Authorities Coordination Committee (NSA CC).
• Other bodies established by Council as necessary for implementation, operation and further development..

The next step is the ratification of FAB agreement and finalisation of agreements between the National Supervisory Authorities and the Air Navigation Service Providers.