The Centre for Security Cooperation (RACVIAC) based in Zagreb, Croatia, held an Open Skies Treaty Aerial Observation Course at the HDF 47th Airbase in Tata at the beginning of March. The main goal of the international organization – in the field of arms control – is to implement mutual security-building measures and closer cooperation. After the academic training and planning, the course participants flew two observation flights in the airspace of Hungary with the AN-30 aircraft arriving from Romania.