49 C.F.R. § 1122.6 – Confidentiality.

(a) All information and documents obtained under § 1122.3 or § 1122.4, whether or not obtained pursuant to a Board request or subpoena, and all activities conducted by the Board under this part prior to the opening of a Formal Board Proceeding, shall be treated as nonpublic by the Board and its staff except to the extent that:
1. (1) The Board, in accordance with 49 CFR 1001.4(c), (d), and (e), directs or authorizes the public disclosure of activities conducted under this part prior to the opening of a Formal Board Proceeding. If any of the activities being publicly disclosed implicate records claimed to be confidential commercial information, the Board shall notify the submitter prior to disclosure in accordance with 49 CFR 1001.4(b) and provide an opportunity to object to disclosure in accordance with 49 CFR 1001.4(d);
2. (2) The information or documents are made a matter of public record during the course of an administrative proceeding; or
3. (3) Disclosure is required by the Freedom of Information Act, 5 U.S.C. 552 or other relevant provision of law.
(b) Procedures by which persons submitting information to the Board pursuant to this part of title 49, chapter X, subchapter B, of the Code of Federal Regulations may specifically seek confidential treatment of information for purposes of the Freedom of Information Act disclosure are set forth in § 1122.7. A request for confidential treatment of information for purposes of Freedom of Information Act disclosure shall not, however, prevent disclosure for law enforcement purposes or when disclosure is otherwise found appropriate in the public interest and permitted by law.