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M.B.603 Issue of approval

Annex I (Part-M) · Regulation (EU) No 1321/2014 · EAR revision 2 Sep 2025

IRImplementing rule

M.B.603Issue of approval

(a)The competent authority shall issue to the applicant an EASA Form 3 approval certificate (Appendix V to this Annex), which includes the extent of the approval, when the maintenance organisation is in compliance with the applicable points of this Annex.

(b)The competent authority shall indicate the conditions attached to the approval on the EASA Form 3 approval certificate.

(c)The reference number shall be included on the EASA Form 3 approval certificate in a manner specified by the Agency.

IR · M.B.603 — Regulation (EU) No 1321/2014 · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

AMCAcceptable means of compliance

AMC M.B.603(a)Issue of approval

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1.For approvals involving more than one competent authority, the approval should be granted in conjunction with the competent authorities of the Member States in whose territories the other maintenance organisation facilities are located. For practical reasons the initial approval should be granted on the basis of a joint audit visit by the approving competent authority and competent authorities of the Member States in whose territories the other maintenance organisation facilities are located. Audits related to the continuation of the approval should be delegated to the competent authorities of the Member States in whose territories the other maintenance organisation facilities are located. The resulting audit form and recommendation should then be submitted to the approving competent authority.

2.The approval should be based upon the organisational capability relative to M.A. Subpart F compliance and not limited by reference to individual EASA certificated products. For example, if the organisation is capable of maintaining within the limitation of M.A. Subpart F the Cessna 100 series aircraft the approval schedule should state A2 Cessna 100 series and not Cessna 172RG which is a particular designator for one of many Cessna 100 series.

3.Special case for ELA1 aircraft: In order to promote standardisation, for this category of aircraft the following approach is recommended: Possible ratings to be endorsed in EASA Form 3: ELA1 sailplanes; ELA1 powered sailplanes and ELA1 aeroplanes; ELA1 balloons; ELA1 airships. Before endorsing any of those ratings (for example, ELA1 sailplanes) in EASA Form 3, the competent authority should audit that the organisation is capable of maintaining at least one aircraft type (for example, one type of sailplanes within the ELA1 category), including the availability of the necessary facilities, equipment, tooling, material, maintenance data, and certifying staff. It is acceptable that the detailed scope of work in the Maintenance Organisation Manual (MOM) contains the same ratings endorsed in EASA Form 3 (for example, ELA1 sailplanes), without a need to further limit them. However, the maintenance organisation will only be able to maintain a certain aircraft type when all the necessary facilities, equipment, tooling, material, maintenance data, and certifying staff are available.

AMC · AMC M.B.603(a) — Regulation (EU) No 1321/2014 · ED Decision 2015/029/R · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

AMCAcceptable means of compliance

AMC M.B.603(c)Issue of approval

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The numeric sequence of the approval reference should be unique to the particular approved maintenance organisation.

AMC · AMC M.B.603(c) — Regulation (EU) No 1321/2014 · ED Decision 2015/029/R · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

All rules in SECTION B — PROCEDURE FOR COMPETENT AUTHORITIES

Consolidated from the EASA Easy Access Rules (revision 2 Sep 2025, extracted 17 Aug 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.

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