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IS.D.OR.250 Information security management manual (ISMM)

Delegated Regulation (EU) 2022/1645 · Regulations (EU) 2023/203 and 2022/1645 · EAR revision 5 Dec 2025

IRImplementing rule

IS.D.OR.250Information security management manual (ISMM)

(a)The organisation shall make available to the competent authority an information security management manual (ISMM) and, where applicable, any referenced associated manuals and procedures, containing:

(1)a statement signed by the accountable manager or, in the case of design organisations, by the head of the design organisation, confirming that the organisation will at all times work in accordance with this Annex and with the ISMM. If the accountable manager or, in the case of design organisations, the head of the design organisation, is not the chief executive officer (CEO) of the organisation, then such CEO shall countersign the statement;

(2)the title(s), name(s), duties, accountabilities, responsibilities and authorities of the person or persons referred to in point IS.D.OR.240(b) and (c);

(3)the title, name, duties, accountabilities, responsibilities and authorities of the common responsible person referred to in point IS.D.OR.240(d), if applicable;

(4)the information security policy of the organisation as referred to in point IS.D.OR.200(a)(1);

(5)a general description of the number and categories of staff and of the system in place to plan the availability of staff as required by point IS.D.OR.240;

(6)the title(s), name(s), duties, accountabilities, responsibilities and authorities of the key persons responsible for the implementation of point IS.D.OR.200, including the person or persons responsible for the compliance monitoring function referred to in point IS.D.OR.200(a)(12);

(7)an organisation chart showing the associated chains of accountability and responsibility for the persons referred to in points (2) and (6);

(8)the description of the internal reporting scheme referred to in point IS.D.OR.215;

(9)the procedures that specify how the organisation ensures compliance with this Part, and in particular:

(i)the documentation point IS.D.OR.200(c);

(ii)the procedures that define how the organisation controls any contracted activities referred to in point IS.D.OR.200(a)(9);

(iii)the ISMM amendment procedure defined in point (c);

(10)the details of currently approved alternative means of compliance.

(b)The initial issue of the ISMM shall be approved and a copy shall be retained by the competent authority. An approval shall not be required for declaring organisations. The ISMM shall be amended as necessary to remain an up-to-date description of the ISMS of the organisation. A copy of any amendments to the ISMM shall be provided to the competent authority.

(c)Amendments to the ISMM shall be managed in a procedure established by the organisation. Any amendments that are not included within the scope of this procedure and any amendments related to the changes referred to in point IS.D.OR.255(b), shall be approved by the competent authority. An approval shall not be required for declaring organisations.

(d)The organisation may integrate the ISMM with other management expositions or manuals it holds, provided there is a clear cross reference that indicates which portions of the management exposition or manual correspond to the different requirements contained in this Annex.

IR · IS.D.OR.250 — Regulations (EU) 2023/203 and 2022/1645 · Regulation (EU) 2025/22 · Part-IS Easy Access Rules · EAR revision 5 Dec 2025

GMGuidance material

GM1 IS.D.OR.250(a)Information security management manual (ISMM)

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The organisation may choose to document some of the information required under point IS.D.OR.250(a) in separate documents (e.g. procedures). In this case, it should ensure that the manual contains adequate references to any document kept separately. Any such documents are then to be considered an integral part of the organisation’s information security management system manual. In the event where an entity holds multiple authorisations or declarations, the ISMM may apply to one or more organisations at a time based on a common ISMS. This ISMM should include at least an approval document of each organisation and should formally be approved by each organisation’s accountable manager or, in the case of design organisations, by each head of the design organisations or responsible person. A common responsible person may be appointed as per IS.D.OR.240(d) and the guidelines of GM1 IS.D.OR.240(e). To ensure that all parties involved can fulfil their responsibilities, all manuals, procedures, and communication between them are advised to be, at least, in one common language, e.g. English. Those parties involved include the competent authorities with which that common language should be agreed upon.

GM · GM1 IS.D.OR.250(a) — Regulations (EU) 2023/203 and 2022/1645 · ED Decision 2023/009/R · Part-IS Easy Access Rules · EAR revision 5 Dec 2025

All rules in ANNEX — INFORMATION SECURITY — ORGANISATION REQUIREMENTS [PART-IS.D.OR]

Consolidated from the EASA Easy Access Rules (revision 5 Dec 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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