66.B.310 Conversion report for approved maintenance organisations authorisations

Annex III (Part-66) · Regulation (EU) No 1321/2014 · EAR revision 2 Sep 2025

IRImplementing rule

66.B.310Conversion report for approved maintenance organisations authorisations

(a)For each approved maintenance organisation concerned, the conversion report shall describe the scope of each type of authorisation issued by the maintenance organisation and include a copy of the relevant approved maintenance organisation's procedures for the qualification and the authorisation of certifying staff on which the conversion process is based.

(b)The conversion report shall show for each type of authorisation referred to in point (a):

1.to which aircraft maintenance licence it will be converted, and

2.which limitations shall be added in accordance with points 66.A.70(c) or (d), as applicable, and

3.the conditions to remove the limitations, specifying the module/subjects on which examination is needed to remove the limitations and obtain a full aircraft maintenance licence, or to include an additional (sub-) category. This shall include the modules defined in Appendix III to this Annex (Part-66) not covered by the national qualification.

IR · 66.B.310 — Regulation (EU) No 1321/2014 · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

AMCAcceptable means of compliance

AMC 66.B.310(a)Conversion report for approved maintenance organisations' authorisations

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1.Conversion reports prepared on the basis of point 66.A.70(c) should include a comparison between the qualification required for each type of organisation authorisation and the scope of the Part-66 licence qualification, which should be performed on the basis of a detailed analysis of the organisation and Part-66 basic qualification standards. The report should identify where a difference between the two standards exists and where such a difference would lead to a limitation on the Part-66 licence.

2.Conversion reports prepared on the basis of point 66.A.70(d), which are limited to other-than-complex motor-powered aircraft that are not used by air carriers licensed in accordance with Regulation (EC) No 1008/2008 should include the privileges associated to the organisation authorisation. The reports should identify which limitations are needed to the Part-66 licence in order to maintain these privileges.

AMC · AMC 66.B.310(a) — Regulation (EU) No 1321/2014 · ED Decision 2020/002/R · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

GMGuidance material

GM 66.B.310(b)3 Conversion report for approved maintenance organisations authorisations

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As conversions performed on the basis of 66.A.70(d) are aimed to maintain the privileges of the pre-existing organisation authorisations, the limitations introduced on the Part-66 licence are not linked to possible differences between the qualification required for the organisation authorisation and the Part-66 licence qualification. This conversion does not include such comparison. This means that, in order to remove such limitations, full compliance with the conditions of Part-66 needs to be demonstrated.

GM · GM 66.B.310(b) — 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 — PROCEDURES 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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