IRImplementing rule
21.B.120Initial certification procedure
(a)Upon receiving an application for the issue of a letter of agreement for the purpose of demonstrating conformity of the individual products, parts, appliances, control and monitoring units (CMUs) and CMU components, the competent authority shall verify the applicant’s compliance with the applicable requirements.
(b)The competent authority shall record all the findings issued, closure actions as well as recommendations for the issue of the letter of agreement.
(c)The competent authority shall confirm to the applicant in writing all the findings raised during the verification. For initial certification, all findings must be corrected to the satisfaction of the competent authority before the letter of agreement can be issued.
(d)When satisfied that the applicant complies with the applicable requirements, the competent authority shall issue the letter of agreement (EASA Form 65, see Appendix XI).
(e)The letter of agreement shall contain the scope of the agreement, a termination date and, where applicable, the appropriate limitations.
(f)The duration of the letter of agreement shall not exceed 1 year.
IR · 21.B.120 — Regulation (EU) No 748/2012 · Regulation (EU) 2024/1110 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025