1. Member States may request a revision of one or more performance targets contained in the performance plans, in accordance with Article 18(1), point (a)(i) of Implementing Regulation (EU) 2019/317, where:
(a)
the actual traffic, recorded by Eurocontrol, deviates from the traffic forecast in the performance plan adopted in accordance with Article 16 of Implementing Regulation (EU) 2019/317 over a given calendar year by at least 10 % of IFR movements;
(b)
the actual traffic, recorded by Eurocontrol, deviates from the traffic forecast in the performance plan adopted in accordance with Article 16 of Implementing Regulation (EU) 2019/317 over a given calendar year by at least 10 % of service units.
2. Member States may request a revision of one or more performance targets contained in the performance plans, in accordance with Article 18(1), point (a)(i) of Implementing Regulation (EU) 2019/317, where the variation of the reference values as a result of the seasonal updates of the Network Operations Plan pursuant to Article 9(4), point (a) and Article 9(8) of Commission Implementing Regulation (EU) 2019/123 ( 5 ) in comparison to the reference values from the latest version of the Network Operations Plan available at the time of drawing up the performance plan is at least:
(a)
0,05 minute of en route ATFM delay if the reference value from the latest version of the NOP available at the time of drawing up the performance plan is less than 0,2 minute of en route ATFM delay; or
(b)
0,04 minute of en route ATFM delay increased by 5 % of the reference value from the latest version of the NOP available at the time of drawing up the performance plan if the reference value is greater than or equal to 0,2 minute of en route ATFM delay.