CS 26.370 Maintenance programme

(a)Compliance with point 26.370(a)(i) of Part26 is demonstrated if the maintenance programme incorporates the approved DTIs developed by the design approval holders in accordance with CS 26.302.

(b)Compliance with point 26.370(a)(ii) of Part26 is demonstrated if compliance with point (i) of this CS is demonstrated or the adverse effects that repairs and changes may have on FCS are addressed by:

(1)incorporating into the maintenance programme all available approved DTIs for changes by 26 February 2024 following compliance with points (c) to (e) of this CS;

(2)complying with point (f) of this CS;

(3)incorporating in the maintenance programme the approved DTIs for all other repairs and changes in accordance with the schedule adopted in a plan to be included, or referred to, in the maintenance programme by 26 February 2024 in compliance with points (g) and (h) of this CS.

(c)Review of aeroplane records and initial request for data

(1)A candidate list of the major changes in the aeroplane that affect or include FCS has been identified by means of a review of records, and listed in a report prepared by the organisation responsible for the management of continuing airworthiness and for the establishment of the maintenance programme, by 26 February 2022.

(2)Requests for FCMS lists and DTIs for changes identified in point (c)(1) above as supplemental type certificates (STCs) and other existing major changes, approved prior to 1 September 2003, are submitted to the design approval holder by 26 March 2022, or an alternative source of approved DTIs is identified.

(3)A final list of the major changes of the aeroplane that affect or include FCS, taking into account the candidate list in point (c)(1) above, the available design approval holder lists of changes that affect the FCBS and the evaluation from the organisation responsible for the management of continuing airworthiness, is included in a report prepared by the organisation responsible for the management of continuing airworthiness. The report should be completed by 26 August 2022 or before operating the aeroplane in accordance with Annex IV (PartCAT) to Regulation (EU) No 965/2012, whichever occurs later.

(d)Review of design approval holder compliance data A review has been conducted by the organisation responsible for the management of continuing airworthiness of the applicable documents supplied by type-certificate (TC) holders and STC holders in compliance with points 26.302, 26.306 to 26.309 and 26.332 to 26.334 of Part26, which supports the identification of the available FCS and DTIs relevant to each aeroplane.

(e)DTIs that should be incorporated into the maintenance programme before 26 February 2024 For changes with an approved DTI that is available and compliant with points 26.307 or 26.333 of Part26, all the applicable DTIs should be incorporated into the maintenance programme by 26 February 2024 or before operating the aeroplane in accordance with Annex IV (PartCAT) to Regulation (EU) No 965/2012, whichever occurs later.

(f)Changes incorporated in an aeroplane imported to the EU after 26 February 2021 For all major changes affecting FCS incorporated in an aeroplane that is imported to the EU after 26 February 2021, the applicable approved DTI should be obtained and incorporated into the maintenance programme by 26 February 2024 or before operating the aeroplane in accordance with Annex IV (PartCAT) to Regulation (EU) No 965/2012, whichever occurs later.

(g)Means to address the adverse effect of repairs and changes that have not had DTIs incorporated into the maintenance programme according to points (e) and (f) of this CS

(1)A plan has been established by the organisation responsible for the management of continuing airworthiness to obtain and implement all the applicable DT data for existing major changes and reinforcing repairs affecting the FCS.

(2)The plan has been incorporated, in full or by reference, into the maintenance programme.

(3)For each change identified in the list contained in the report of point (c)(3) above and that is subject to this point, the plan shows that:

(i)requests for DT data have been made to the DAH that has to comply with point 26.334 of Part26, and an agreement for obtaining approved DTIs is reached, or

(ii)an agreement is established with a third party to provide approved DTIs, in order to support a schedule for incorporation of the DTIs into the maintenance programme in accordance with point (h).

(4)In case a change is identified after establishing the list of changes according to point (c)(3) above, e.g. during an aeroplane survey, that change must be added to the list.

(5)The plan ensures that reinforcing repairs to the FCS will be identified and assessed for DT by specifying processes for:

(i)conducting surveys and records reviews of the affected aeroplanes as necessary to ensure the identification and documentation of all the existing reinforcing repairs that affect the FCS; and

(ii)obtaining DT data for reinforcing repairs identified in point (g)(5)(i) above. The plan does not need to include an aeroplane survey when the aeroplane certification basis for the complete structure of the aeroplane is CS 25.571. Reinforcing repairs are described in point 3.13.3 of Appendix 3 to AMC 2020A.

(6)This plan also includes schedules for:

(i)conducting aeroplane surveys, obtaining DT data for repairs and incorporating all approved DTIs into the maintenance programme considering the applicable REGs. Additional means of compliance may be found in Appendix 3 to AMC 2020A;

(ii)obtaining DT data for all major changes identified either in the plan or added to the list of changes according to point (g)(4) above, and incorporating the applicable approved DTIs in the maintenance programme in accordance with point (h) below.

(h)Schedule for obtaining DT data for certain changes For major changes subject to point (g), a schedule is established for obtaining DT data such that:

(1)for major changes identified in the plan in accordance with point (g)(3), all applicable approved DTIs will be incorporated into the maintenance programme before 26 February 2026; and

(2)for major changes identified according to point (g)(4), the applicable approved DTIs will be incorporated into the maintenance programme by 26 February 2026 or within 12 months of the identification of that change, or before operating the aircraft in accordance with Annex IV (PartCAT) to Regulation (EU) No 965/2012, whichever occurs later.

(i)As an alternative to compliance with points (c) to (h) above, compliance with point 26.370(a)(ii) of Part26 is demonstrated when a process exists and has been implemented to ensure that approved DTIs for all repairs and changes affecting the FCS of an aeroplane have been incorporated into the maintenance programme since the aeroplane first entered service.

(j)Compliance with point 26.370(a)(iii) of Part26 is demonstrated by incorporating into the maintenance programme the most restrictive applicable limitation of points (1), (2) or (3) below, in flight cycles or flight hours or both, as appropriate:

(1)An EASA-approved LOV in accordance with Part26, or

(2)An EASA-approved limitation on the applicability of the ALS of the instructions for continued airworthiness at the aeroplane level, in accordance with JAR/CS 25.571 and 25.1529 (or equivalent), or

(3)For aeroplanes listed in Table 1 below, the limitation in Table 1, unless EASA has approved different limitations in accordance with (1) or (2). Table 1

(k)Compliance with point 26.370(a)(iv) of Part26 is demonstrated by incorporating a CPCP into the maintenance programme, and where a TC holder baseline CPCP produced in accordance with point 26.304 of Part26 exists, it is taken into account in the development of the operator’s CPCP.

[Issue: 26/3]

[Issue: 26/5]