14 C.F.R. § 300.6 Practitioners' standards of conduct.
Title 14 - Aeronautics and Space
Every person representing a client in matters before DOT in all contacts with DOT employees, should: (a) Strictly observe the standards of professional conduct; (b) Refrain from statements or other actions designed to mislead DOT or to cause unwarranted delay; (c) Avoid offensive or intemperate behavior; (d) Advise all clients to avoid improprieties and to obey the law as the attorney believes it to be; and (e) Terminate the professional relationship with any client who persists in improprieties in proceedings before DOT.
Title 14: Aeronautics and Space
PART 300—RULES OF CONDUCT IN DOT PROCEEDINGS UNDER THIS CHAPTER
§ 300.6 Practitioners' standards of conduct.
