14 C.F.R. § 305.2 Definition.
Title 14 - Aeronautics and Space
For the purpose of, and as used in this part, the term investigation means a non-adjudicatory, informal nonpublic investigation for the purpose of determining whether formal enforcement action should be instituted with respect to alleged violations of law.
Title 14: Aeronautics and Space
PART 305—RULES OF PRACTICE IN INFORMAL NONPUBLIC INVESTIGATIONS
§ 305.2 Definition.