No person may mark a product or article in accordance with this subpart unless-
(a) That person produced the product or article -(1) Under part 21, subpart F, G, K, or O of this chapter; or(2) For export to the United States under the provisions of an agreement between the United States and another country or jurisdiction for the acceptance of products and articles; and(b) That product or article conforms to its approved design, and is in a condition for safe operation; and, for a TSO article; that TSO article meets the applicable performance standards.Doc. No. FAA-2006-25877, Amdt. 45-26, 74 FR 53394, Oct. 16, 2009