Between 11-12 June 2013, the Director General of AACR, Mr Armand Petrescu, attended the 50th meeting of the Single European Sky Committee (SSC) which took place in Brussels. The most important topics on the Agenda were the SES Performance Scheme, EASA's ATM / ANS regulatory activities, discussions on the adoption of the first 3 annexes of the High Level Agreement with EUROCONTROL, the implementation of the revised regulations on performance and tariffs, report on the evolution of the methodology of risk assessment of volcanic ash for safety, etc.