IRImplementing rule
21L.B.122Registration of a declaration of design compliance for a major change to an aircraft design
(a)The Agency shall register a declaration of design compliance for a major change to the design of an aircraft for which design compliance has been declared, provided that:
1.the declarant has declared compliance in accordance with point (a) of point 21L.A.107;
2.the declarant has provided to the Agency the documents required in accordance with point (d) of point 21L.A.107;
3.the declarant has made a commitment that the obligations in accordance with point 21L.A.47 will also be undertaken in respect of the changed aircraft design;
4.there are no unresolved issues from the physical inspection, if carried out in accordance with point (b)
(b)The Agency shall only register a declaration of a major change to the design of an aircraft for which design compliance has been declared if it is limited to the specific configuration(s) in the registered declaration of design compliance to which the change relates.
IR · 21L.B.122 — Regulation (EU) No 748/2012 · Regulation (EU) 2022/1358 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025