--- title: "21L.A.123 Declaration of production capability — Annex Ib, Initial Airworthiness · Avioverse" description: "Prior to producing any products or parts, an organisation intending to show the conformity of those products or parts with the applicable design data…" url: "https://avioverse.aero/regulations/easa/initial-airworthiness/annex-ib/section-a-technical-requirements/21l-a-123" --- # 21L.A.123 Declaration of production capability Annex Ib · Regulation (EU) No 748/2012 · EAR revision 27 Nov 2025 IR Implementing rule ## 21L.A.123 Declaration of production capability (a) Prior to producing any products or parts, an organisation intending to show the conformity of those products or parts with the applicable design data shall declare its production capability. (b) The declaration, and any subsequent changes thereto, shall be made in a form and manner established by the competent authority. (c) The declaration shall include the information necessary for the competent authority to become familiar with the organisation and the intended scope of work, and shall include at least the following: 1\. the registered name of the organisation; 2\. the contact details of the organisation’s registered address of their [principal place of business](https://avioverse.aero/glossary/easa/principal-place-of-business) and, where applicable, the contact and the operating sites of the organisation; 3\. the names and contact details of the accountable manager of the organisation nominated in accordance with point (c)(1) of point 21L.A.125; 4\. the intended scope of work; 5\. the date of the intended commencement of production; 6\. a statement confirming that the organisation: (i) has a management system for production in accordance with point (a) of point 21L.A.124; and (ii) will maintain the management system for production in compliance with this Subpart; 7\. a statement confirming that the organisation will adhere to the processes and procedures established in accordance with point (d) of point 21L.A.124; 8\. a statement that the organisation agrees to undertake the obligations of a declared production organisation in accordance with point 21L.A.127. (d) The declaration of production capability shall be submitted to the competent authority. IR · 21L.A.123 — Regulation (EU) No 748/2012 · Regulation (EU) 2022/1358 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025 AMC Acceptable means of compliance ## AMC1 21L.A.123(c) Declaration of production capability DECLARATION FORM The natural or legal person that declares their production capability should provide the information required by point 21L.A.123(c) in the declaration form defined below. EASA Form 203 | DECLARATION OF PRODUCTION CAPABILITY pursuant to Commission Regulation (EU) No 748/2012 Annex Ib ([Part 21 Light](https://avioverse.aero/glossary/easa/part-21-light)) Subpart G — DECLARED PRODUCTION ORGANISATIONS | | | | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------- | | ☐ | Initial declaration | | | ☐ | Notification of changes — Declared production organisation (DPO) registered number: | | | 1. | Declared production organisation (DPO) Registered name: | | | 2. | Place of business Contact details (registered address, phone, email) of the DPO’s [principal place of business](https://avioverse.aero/glossary/easa/principal-place-of-business): | | | 3. | Operating sites Where applicable, contact details (address, phone, email) of the operating site(s) where manufacturing activities are taking place: (may be left blank if same as in point 2 ‘Place of business’) | | | 4. | Accountable manager Name and contact details (address, phone, email) of the DPO’s representative: | | | 5. | Intended scope of work | | | | 5.1. Category of products | | | | Products certified under Part 21 Light Subpart B | Products declared under Part 21 Light Subpart C | | | ☐ Aeroplanes with a maximum take-off mass (MTOM) of 2 000 kg or less with a seating configuration of maximum 4 persons | ☐ Aeroplanes with a maximum take-off mass (MTOM) of 1 200 kg or less that is not jet powered, and has a seating configuration of maximum 2 persons. | | | ☐ Sailplanes or powered sailplanes with a MTOM of 2 000 kg or less | ☐ Sailplanes or powered sailplanes with a MTOM of 1 200 kg or less | | | ☐ Balloons | ☐ Balloons designed for not more than 4 persons | | | ☐ Hot-air airships | ☐ Hot-air airships designed for not more than 4 persons | | | ☐ Passenger gas airships designed for not more than 4 persons | | | | ☐ Rotorcraft with a MTOM of 1 200 kg or less and a maximum seating configuration of 4 persons | | | | ☐ Piston engines | | | | ☐ Fixed pitch propellers | | | | ☐ Gyroplanes | | | | 5.2. Conformity documents | | | | ☐ For complete aircraft, issue EASA Form 52B for new aircraft | | | | ☐ For other products or parts, issue EASA Form 1 | | | | ☐ Maintain a new aircraft and issue EASA Form 53B | | | | 5.3. Detailed description of the scope of work (aircraft type …) (parts for aircraft type …) | | | 6. | Date of intended commencement of production: | | | 7. | Statements The DPO has established and implemented a management system for production in accordance with point 21L.A.124. This management system will be maintained in compliance with Subpart G of Annex Ib (Part 21 Light) to Regulation (EU) No 748/2012. The references of the elements of the management system for production are included in the annex to this declaration. All the personnel of the DPO must adhere to the processes and procedures referred to in the annex to this declaration. \[Company Name] agrees to undertake the obligations of a declared production organisation in accordance with point 21L.A.127. I confirm that all the information contained in this declaration, including its annex, is complete and correct. | | | 8. | | | | | Date / Location | Signature of the accountable manager | | ANNEX TO THE DECLARATION OF PRODUCTION CAPABILITY | | | | | ------------------------------------------------------------------------------------------------------------------------------------------------------------ | --------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------- | | This annex includes references to the DPO documentation showing compliance with the requirements of Annex Ib (Part 21 Light) to Regulation (EU) No 748/2012. | | | | | No | Part 21 Light | Subject | DPO reference (DPOE reference, as relevant) | | Quality system | | | | | 1. | 21L.A.124(b)(2)(i) | Document issue, approval, or change | | | 2. | 21L.A.124(b)(2)(ii) | Vendor and subcontractor assessment, audit and control | | | 3. | 21L.A.124(b)(2)(iii) | Verification that incoming products, parts, materials, and equipment, including items supplied new or used by buyers of products, are as specified in the applicable design data | | | 4. | 21L.A.124(b)(2)(iv) | Identification and traceability | | | 5. | 21L.A.124(b)(2)(v) | Manufacturing processes | | | 6. | 21L.A.124(b)(2)(vi) | Inspection and testing | | | 7. | 21L.A.124(b)(2)(vi) | Production flight tests, flight test operations manual (FTOM) (if relevant) | | | 8. | 21L.A.124(b)(2)(vii) | Calibration of tools, jigs, and test equipment | | | 9. | 21L.A.124(b)(2)(viii) | Non-conforming item control | | | 10. | 21L.A.124(b)(2)(ix) 21L.A.5 | Collaboration with the applicant for, or holder of, the design approval or the declarant of a declaration of design compliance | | | 11. | 21L.A.124(b)(2)(x) | Completion and retention of records | | | 12. | 21L.A.124(b)(2)(xi) 21L.A.125(a) | Competence and qualifications of personnel | | | 13. | 21L.A.124(b)(2)(xii) | Issue of airworthiness release documents | | | 14. | 21L.A.124(b)(2)(xiii) | Handling, storage and packing | | | 15. | 21L.A.124(b)(2)(xiv) 21L.A.124(c) | Internal quality audits and the resulting corrective actions | | | 16. | 21L.A.124(b)(2)(xv) | Work performed at any location other than the operating sites included in the declaration | | | 17. | 21L.A.124(b)(2)(xvi) 21L.A.124(e) | Work carried out after the completion of production but prior to delivery, to maintain the aircraft in a condition for safe operation | | | 18. | 21L.A.124(b)(2)(xvii) | Request for the issuance of permits to fly and the approval of associated flight conditions | | | No | Part 21 Light | Subject | DPO reference (DPOE reference, as relevant) | | -------------------------------------------------- | --------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------- | | Airworthiness and environmental compatibility data | | | | | 20. | 21L.A.125(b)(2) | Procedure to ensure that airworthiness and environmental compatibility data is correctly incorporated into production data | | | 21. | 21L.A.125(b)(3) | Such data is kept up to date and made available to all personnel that need access to such data to perform their duties | | | Organisation, key personnel and certifying staff | | | | | 22. | 21L.A.125(c)(4) | Organisational structure documented and kept updated | | | 23. | 21L.A.125(c)(2) | Identification of key personnel nominated by the accountable manager to ensure that the organisation is in compliance with the requirements of Subpart G of Part 21 Light | | | 24. | 21L.A.125(c)(2) | Nomination process for key personnel ensuring they have the appropriate knowledge, background and experience to discharge their responsibilities | | | 25. | 21L.A.125(c)(3) | Staff at all levels have been given appropriate authority to be able to discharge their allocated responsibilities and that there is full and effective coordination within the declared production organisation in respect of airworthiness and environmental compatibility data matters | | | 26. | 21L.A.125(d)(1) | Nomination procedure for certifying staff | | | 27. | 21L.A.125(d)(2) | List of certifying staff | | | Changes to the DPO | | | | | 28. | 21A.L.128 | Procedure for the notification of organisational changes to the competent authority according to point 21L.A.128 | | | Obligations | | | | | 29. | 21L.A.3 | Reporting system | | | 30. | 21L.A.6 | Marking | | | 31. | 21L.A.7 | Record-keeping | | Instructions: If the DPO, for the purpose of compliance with point 21L.A.124(d), has produced a declared production organisation exposition (DPOE), then the DPOE sections should be referenced in the right-hand column of the form. AMC · AMC1 21L.A.123(c) — Regulation (EU) No 748/2012 · ED Decision 2023/013/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025 [All rules in SECTION A - TECHNICAL REQUIREMENTS](https://avioverse.aero/regulations/easa/initial-airworthiness/annex-ib/section-a-technical-requirements) Consolidated from the EASA Easy Access Rules (revision 27 Nov 2025, extracted 13 Oct 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.