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21.A.159 Duration and continued validity

Annex I · Regulation (EU) No 748/2012 · EAR revision 27 Nov 2025

IRImplementing rule

21.A.159Duration and continued validity

(a)A production organisation approval certificate shall be issued for an unlimited period of time. It shall remain valid subject to the production organisation’s compliance with all the following conditions:

1.the production organisation continues to comply with the applicable requirements of Regulation (EU) 2018/1139 and its delegated and implementing acts;

2.the competent authority is permitted by the production organisation or by any of its partners, suppliers or subcontractors to perform the investigations in accordance with point 21.A.9;

3.the production organisation is able to provide the competent authority with evidence showing that it maintains satisfactory control of the manufacture of products, parts, appliances, CMUs or CMU components under the approval;

4.the production organisation approval certificate has not been revoked by the competent authority under point 21.B.65, or surrendered by the production organisation.

(b)Upon surrender or revocation, the production organisation approval certificate shall be returned to the competent authority.

IR · 21.A.159 — Regulation (EU) No 748/2012 · Regulation (EU) 2024/1108 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

GMGuidance material

GM1 21.A.159(a)(3)Duration and continued validity

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SATISFACTORY CONTROL OF THE MANUFACTURE The following are examples of lack of satisfactory control:

1.an uncontrolled non-compliance with type design data affecting the airworthiness of product part or appliance

2.an incident/accident identified as caused by POA holder

3.non-compliance with the POE and its associated procedures which could affect conformity of manufactured items to design data

4.insufficient competency of certifying staff

5.insufficient resources in respect of facilities, tools and equipment

6.insufficient means to ensure good production work standards

7.a lack of effective and timely response to prevent a recurrence of any of point 1 to 6.

GM · GM1 21.A.159(a)(3) — Regulation (EU) No 748/2012 · ED Decision 2023/014/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

All rules in SECTION A — TECHNICAL REQUIREMENTS

Consolidated from the EASA Easy Access Rules (revision 27 Nov 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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