The second quarterly report covers respective performance track records of AVMS and AEC in the period January-March 2017 and is developed pursuant to “AVMS and AEC Performance Monitoring Matrix”,1 designed in consultations with the two regulatory bodies and published in January 2017. In that, the methodology developed for this monitoring programme accommodates the specificities of both regulators and monitors their operation in terms of transparency and accountability, efficiency and independence, performance and law enforcement, and protection of the public interest.