49 CFR 821.62: Procedures for handling ex parte communications.

A Board decisional employee who receives, makes or knowingly causes to be made a communication prohibited by § 821.61 shall place in the public record of the proceeding:

(a) All such written communications;

(b) Memoranda stating the substance of all such oral communications; and

(c) All written responses, and memoranda stating the substance of all oral responses, to the communications described in paragraphs (a) and (b) of this section.