14 CFR § 16.203 - Appearances, parties, and rights of parties.
(1) Any party may be accompanied, represented, or advised by an attorney licensed by a State, the District of Columbia, or a territory of the United States to practice law or appear before the courts of that State or territory, or by another person authorized by the hearing officer to be the party's representative.
(b)Parties and agency participation.
(1) The parties to the hearing are the complainant(s) and respondent(s) named in the hearing order, and the agency. The style of any pleadings filed under this Subpart shall name the respondent as the Appellant, and the Federal Aviation Administration as the Agency.
(2) Unless otherwise specified in the hearing order, the agency attorney will serve as prosecutor for the agency from the date of issuance of the Director's Determination providing an opportunity for hearing.