21L.A.91 Changes to a part of a product covered by a supplemental type certificate

• Regulation (EU) 2022/1358 found in: Initial Airworthiness and Environmental Protection (748/2012) Part-21 Part-21L (Jul 2024)

21L.A.91 Changes to a part of a product covered by a supplemental type certificate Regulation (EU) 2022/1358 (a)     A minor change to a part of a product covered by a supplemental type certificate shall be approved in accordance with [Subpart D](#_DxCrossRefBm1649097716) of this Annex. (b)     A major change to that part of a product covered by a supplemental type certificate shall be approved as a separate supplemental type certificate in accordance with this Subpart. (c)      By way of derogation from point (b), a major change to that part of a product covered by a supplemental type certificate submitted by the supplemental type-certificate holder may be approved as a change to the existing supplemental type certificate in accordance with points [21L.A.63](#_DxCrossRefBm1649097729) to [21L.A.69](#_DxCrossRefBm1649097792). #### 21L.A.91 Changes to a part of a product covered by a supplemental type certificate *Regulation (EU) 2022/1358* (a) A minor change to a part of a product covered by a supplemental type certificate shall be approved in accordance with [Subpart D](#_DxCrossRefBm485231212) of this Annex. (b) A major change to that part of a product covered by a supplemental type certificate shall be approved as a separate supplemental type certificate in accordance with this Subpart. (c) By way of derogation from point (b), a major change to that part of a product covered by a supplemental type certificate submitted by the supplemental type-certificate holder may be approved as a change to the existing supplemental type certificate in accordance with points [21L.A.63](#_DxCrossRefBm485231225) to [21L.A.69](#_DxCrossRefBm485231288).