Regulation (EU) 2022/1358
(a) Changes to a type certificate shall be classified as minor or major.
(b) A āminor changeā is a change that has no appreciable effect on the mass, balance, structural strength, reliability, certified noise or emissions levels, operational characteristics, or other characteristics affecting the airworthiness or the environmental compatibility of the product.
(c) All other changes are āmajor changesā, unless the change in design, power, thrust, or mass is so extensive that a substantially complete investigation of compliance with the applicable typeācertification basis or with the applicable environmental protection requirements or with the applicable detailed technical specifications is required, in which case the design shall be certified in accordance with Subpart B of this Annex.
(d) The requirements for the approval of minor changes are those established in point 21L.A.67.
(e) The requirements for the approval of major changes are those established in point 21L.A.68.
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