2. The national supervisory authority shall issue regular reports on the monitoring of performance of air navigation services provided by the air navigation service providers designated under Articles 8 and 10 and make them available to the Commission. The results of those assessments shall be made publicly available without prejudice to Article 52(3).
The air navigation service providers designated under Articles 8 and 10 shall provide the information and data necessary for such monitoring to the national supervisory authority. This shall include information and data related to actual costs of the services provided and procured and related revenues.