66.A.25 Basic knowledge requirements

• Regulation (EU) 2023/989 found in: Continuing Airworthiness (1321/2014) Part-M Part-145 Part-66 Part-147 Part-T Part-ML Part-CAMO Part-CAO (Jul 2024)

66.A.25 Basic knowledge requirements Regulation (EU) 2023/989 (a) The applicant for an aircraft maintenance licence shall demonstrate by examination a level of knowledge of the related subject modules in accordance with [Appendix I](#_DxCrossRefBm1518545649) (applicable to category A, B1, B2, B2L, B3 and C licences) or [Appendix VII](#_DxCrossRefBm1518545679) (applicable to category L licences). (b) The basic knowledge examinations shall comply with the standard set out in [Appendix II](#_DxCrossRefBm1518545681) (applicable to category A, B1, B2, B2L, B3 and C licences) or [Appendix VIII](#_DxCrossRefBm1518545680) (applicable to category L licences) to this Annex and shall be conducted by either of the following: (1) a training organisation approved in accordance with [Annex IV (Part-147)](#_DxCrossRefBm1518544911); (2) the competent authority; (3) for category L licences, another organisation as agreed by the competent authority. (c) The basic knowledge examinations shall have been passed within 10 years prior to the application for an aircraft maintenance licence or the addition of a category or subcategory to such a licence. If the basic knowledge examinations have not been passed within that 10-year period, credits for basic knowledge examinations may be alternatively obtained by the applicant in accordance with point (d). The 10 years’ validity requirement applies to each individual module examination, except for those module examinations which were already passed as part of another licence category and the licence has already been issued. (d) The applicant may apply to the competent authority for full or partial credits for the basic knowledge requirements for: (1) basic knowledge examinations which were passed more than 10 years before the application for an aircraft maintenance licence was submitted (see point (c)); (2) any other national technical training and examination considered by the competent authority as equivalent to the corresponding basic knowledge requirements of this Annex. The applicant shall provide evidence of the granted credits by referring to an examination credit report approved by the competent authority in accordance with Section B, Subpart E, of this Annex III (Part-66). (e) A basic training course without Modules 1 and 2 of [Appendix I](#_DxCrossRefBm1518545649) to this Annex is considered a full basic training course approved in accordance with [Annex IV (Part-147)](#_DxCrossRefBm1518544911) only when knowledge of those Modules is subsequently demonstrated by the applicant by examination and is credited by the competent authority. (f) The holder of an aircraft maintenance licence applying for the addition of a different category or subcategory shall complement by examination the level of knowledge that is appropriate to the related subject modules in accordance with [Appendix I](#_DxCrossRefBm1518545649) (for category A, B1, B2, B2L, B3 and C licences) or [Appendix VII](#_DxCrossRefBm1518545679) (for category L licences). [Appendix IV](#_DxCrossRefBm1518545669) details the modules of [Appendix I](#_DxCrossRefBm1518545649) (for category B1, B2, B2L, B3 and C licences) or [Appendix VII](#_DxCrossRefBm1518545679) (for category L licences) required for the addition of a new category or subcategory to an existing licence issued in accordance with this AnnexA. #### 66.A.25 Basic knowledge requirements *Regulation (EU) 2023/989* (a) The applicant for an aircraft maintenance licence shall demonstrate by examination a level of knowledge of the related subject modules in accordance with [Appendix I](#_DxCrossRefBm1203440536) (applicable to category A, B1, B2, B2L, B3 and C licences) or [Appendix VII](#_DxCrossRefBm1203440566) (applicable to category L licences). (b) The basic knowledge examinations shall comply with the standard set out in [Appendix II](#_DxCrossRefBm1203440568) (applicable to category A, B1, B2, B2L, B3 and C licences) or [Appendix VIII](#_DxCrossRefBm1203440567) (applicable to category L licences) to this Annex and shall be conducted by either of the following: (1) a training organisation approved in accordance with [Annex IV (Part-147)](#_DxCrossRefBm1203439798); (2) the competent authority; (3) for category L licences, another organisation as agreed by the competent authority. (c) The basic knowledge examinations shall have been passed within 10 years prior to the application for an aircraft maintenance licence or the addition of a category or subcategory to such a licence. If the basic knowledge examinations have not been passed within that 10-year period, credits for basic knowledge examinations may be alternatively obtained by the applicant in accordance with point (d). The 10 years’ validity requirement applies to each individual module examination, except for those module examinations which were already passed as part of another licence category and the licence has already been issued. (d) The applicant may apply to the competent authority for full or partial credits for the basic knowledge requirements for: (1) basic knowledge examinations which were passed more than 10 years before the application for an aircraft maintenance licence was submitted (see point (c)); (2) any other national technical training and examination considered by the competent authority as equivalent to the corresponding basic knowledge requirements of this Annex. The applicant shall provide evidence of the granted credits by referring to an examination credit report approved by the competent authority in accordance with Section B, Subpart E, of this Annex III (Part-66). (e) A basic training course without Modules 1 and 2 of [Appendix I](#_DxCrossRefBm1203440536) to this Annex is considered a full basic training course approved in accordance with [Annex IV (Part-147)](#_DxCrossRefBm1203439798) only when knowledge of those Modules is subsequently demonstrated by the applicant by examination and is credited by the competent authority. (f) The holder of an aircraft maintenance licence applying for the addition of a different category or subcategory shall complement by examination the level of knowledge that is appropriate to the related subject modules in accordance with [Appendix I](#_DxCrossRefBm1203440536) (for category A, B1, B2, B2L, B3 and C licences) or [Appendix VII](#_DxCrossRefBm1203440566) (for category L licences). [Appendix IV](#_DxCrossRefBm1203440556) details the modules of [Appendix I](#_DxCrossRefBm1203440536) (for category B1, B2, B2L, B3 and C licences) or [Appendix VII](#_DxCrossRefBm1203440566) (for category L licences) required for the addition of a new category or subcategory to an existing licence issued in accordance with this AnnexA.