14 C.F.R. § 13.227 Expert or opinion witnesses.
Title 14 - Aeronautics and Space
An employee of the agency may not be called as an expert or opinion witness, for any party other than the FAA, in any proceeding governed by this subpart. An employee of a respondent may not be called by an agency attorney as an expert or opinion witness for the FAA in any proceeding governed by this subpart to which the respondent is a party.
Title 14: Aeronautics and Space
PART 13—INVESTIGATIVE AND ENFORCEMENT PROCEDURES
Subpart G—Rules of Practice in FAA Civil Penalty Actions
§ 13.227 Expert or opinion witnesses.
