49 CFR § 554.11 - Final decisions.
(a) The Administrator bases his final decision on the completed investigative file and on information, views, and arguments submitted at the public meeting.
(b) If the Administrator decides that a failure to comply or a safety-related defect exists, he orders the manufacturer to furnish the notification specified in 49 U.S.C. 30118 and 30119 and to remedy the defect or failure to comply.
(c) If the Administrator closes an investigation following an initial determination, without making a final determination that a failure to comply or a safety-related defect exists, he or she will so notify the manufacturer and publish a notice of that closing in the Federal Register.
(d) A statement of the Administrator's final decision and the reasons for it appears in each completed public file.