14 C.F.R. § 16.217 Witnesses.
Title 14 - Aeronautics and Space
(a) Each party may designate as a witness any person who is able and willing to give testimony that is relevant and material to the issues in the hearing case, subject to the limitation set forth in paragraph (b) of this section. (b) The hearing officer may exclude testimony of witnesses that would be irrelevant, immaterial, or unduly repetitious. (c) Any witness may be accompanied by counsel. Counsel representing a nonparty witness has no right to examine the witness or otherwise participate in the development of testimony.
Title 14: Aeronautics and Space
PART 16—RULES OF PRACTICE FOR FEDERALLY-ASSISTED AIRPORT ENFORCEMENT PROCEEDINGS
Subpart F—Hearings
§ 16.217 Witnesses.