IRImplementing rule
21L.A.104Eligibility
(a)A declarant who made a declaration of aircraft design compliance in accordance with Subpart C of this Annex may declare compliance of a minor change to the design of that aircraft under the conditions laid down in this Subpart. In addition, such a declaration of compliance may also be made, under the conditions laid down in this Subpart, by a design organisation approved in accordance with point (c)(3) of point 21.A.263 of Annex I (Part 21) .
(b)Only the declarant who made a declaration of aircraft design compliance in accordance with Subpart C of this Annex may declare the compliance of a major change to the design of an aircraft for which design compliance has been declared in accordance with Subpart C of this Annex, under the conditions laid down in this Subpart.
(c)By derogation from point (b) of point 21L.A.104, if the declarant who made a declaration of aircraft design compliance in accordance with Subpart C of this Annex is no longer active or is unresponsive to requests for design changes, the compliance of a changed aircraft design may also be declared in accordance with Subpart C of this Annex by a design organisation approved in accordance with point (c)(4) of point 21.A.263 of Annex I (Part 21) within the scope of their terms of approval, or by any other natural or legal person who is able to undertake the obligations laid down in point 21L.A.47 with respect to that changed aircraft.
IR · 21L.A.104 — Regulation (EU) No 748/2012 · Regulation (EU) 2022/1358 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025