PART 3Amendment of principal EU RegulationsCHAPTER 5Amendment of Regulation (EU) No 2018/1139SECTION 3Substantive requirements – Chapter 3 of Regulation (EU) No 2018/1139SUB-SECTION 5Air Traffic Management / Air Navigation ServicesAmendment of Article 42 of Regulation (EU) No 2018/1139119.(1)Article 42 (organisations involved in the design, production or maintenance of ATM/ANS systems and ATM/ANS constituents) is amended as follows.(2)In paragraph 1—(a)for “the implementing acts referred to in” substitute “regulations made under”;(b)in point (a), for “implementing acts” substitute “regulations”.(3)In paragraphs 2, 3 and 4, for “the implementing acts referred to in” substitute “regulations made under”.