Article 18
Confidentiality 1. Neither the national supervisory authorities, acting in accordance with their national legislation, nor the Commission shall disclose information of a confidential nature, in particular information about air navigation service providers, their business relations or their cost components. 2. Paragraph 1 shall be without prejudice to the right of disclosure by national supervisory authorities where it is essential for the purposes of fulfilling their duties, in which case such disclosure shall be proportionate and shall have regard to the legitimate interests of air navigation service providers in the protection of their business secrets. 3. Moreover, paragraph 1 shall not preclude disclosure of information, other than information of a confidential nature, on the conditions and performance of service provision.