1. In accordance with paragraphs 2 to 3 of this Article, the Commission shall adopt implementing acts setting the Union-wide performance targets for en route air navigation services, in the key performance areas referred to in Article 21(3), point (a), for each reference period, and define the duration of that period. Those implementing acts shall be adopted in accordance with the examination procedure referred to in Article 48(3).
In conjunction with those Union-wide performance targets, the Commission may adopt implementing acts, setting complementary baseline values, alert thresholds, breakdown values and benchmark groups. Those implementing acts shall be adopted in accordance with the examination procedure referred to in Article 48(3).