5. The setting of the performance targets included in the performance plans, the preparation and the assessment of draft performance plans and the monitoring and benchmarking of the performance of the air navigation services and network management shall take into account the impact of local circumstances as well as external factors that the air navigation service provider has no reasonable means to mitigate where appropriate.
The impact of local circumstances already taken into account in the setting of Union-wide performance targets, in accordance with Article 22(2), point (d), and in the setting of breakdown values established under Article 22(1) shall subsequently not be taken into account when assessing the consistency of the performance targets included in the draft performance plan with Union-wide performance targets in order to justify the deviation of those former targets from those latter targets. The impact of local circumstances already taken into account for setting the performance targets included in the draft performance plan shall subsequently not be taken into account when monitoring the achievement of those targets.