IRImplementing rule
21L.A.26Type design
The applicant for a type certificate shall define the product type design to enable its unique and unambiguous identification, consisting of:
(a)drawings and specifications and a listing of those drawings and specifications that are necessary to define the configuration and the design features of the product;
(b)information on the materials and processes used;
(c)information on the methods of manufacture and assembly;
(d)any airworthiness limitations;
(e)the environmental compatibility requirements; and
(f)any other data allowing by comparison the determination of the airworthiness, and, if relevant, the environmental compatibility of later products of the same type.
IR · 21L.A.26 — Regulation (EU) No 748/2012 · Regulation (EU) 2022/1358 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025