1. Where, during a reference period, Union-wide performance targets are no longer adequate, in the light of significantly changed circumstances or safety considerations, and where the revision of one or several targets is necessary and proportionate, the Commission shall revise those Union-wide performance targets. Article 22 shall apply to such decision.
Where, following such revision, the performance targets contained in the performance plans adopted pursuant to Article 24(6) are no longer consistent with the Union-wide performance targets, the national supervisory authorities shall revise those plans with respect to the performance targets concerned. Articles 23, 24 and 25 shall apply to the revision of those plans. The consultation referred to in Article 23(8) may be limited, for the purpose of this subparagraph, to the performance targets and parts of the draft performance plans which are directly or indirectly affected by the revision.
Following the revision referred to in the first subparagraph, national supervisory authorities shall prepare new draft performance plans, to which Articles 23, 24 and 25 shall apply. The Network Manager shall draw up a new draft Network Performance Plan, to which Article 26 shall apply.