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21L.A.11 Findings and observations

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

IRImplementing rule

21L.A.11Findings and observations

(a)After the receipt of the notification of findings, the natural or legal person who holds or who has applied for a type certificate, supplemental type certificate, major repair design approval, permit to fly, certificate of airworthiness, restricted certificate of airworthiness, noise certificate or restricted noise certificate, who has declared design compliance, who has declared their design or production capability or who produces aircraft, engines, propellers or parts under Subpart R of this Annex, shall take the following steps within the time period determined by the competent authority in accordance with point (d) or (e) of point 21L.B.21:

1.identify the root cause(s) of, and contributing factor(s) to, the non-compliance;

2.define a corrective action plan and propose it to the competent authority;

3.demonstrate the implementation of the corrective action(s) to the satisfaction of the competent authority.

(b)An observation notified by the competent authority in accordance with point (f) of point 21L.B.21 shall be given due consideration. The natural or legal person shall record the decision taken in respect of those observations.

IR · 21L.A.11 — Regulation (EU) No 748/2012 · Regulation (EU) 2022/1358 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

GMGuidance material

GM1 21L.A.11(a)Findings and observations

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ROOT-CAUSE ANALYSIS

(a)It is important that the analysis does not primarily focus on establishing who or what caused the non-compliance, but on why it was caused. Establishing the root cause(s) of non-compliance often requires an overarching view of the events and circumstances that led to it, to identify all the possible systemic and contributing factors (human factors (HFs), regulatory, organisational, technical factors, etc.) in addition to the direct factors.

(b)A narrow focus on single events or failures, or the use of a simple, linear model, such as a fault tree, to identify the chain of events that led to the non-compliance, may not properly reflect the complexity of the issue and, therefore, there is a risk that important factors that must be considered to prevent reoccurrence will be ignored. Such an inappropriate or partial root-cause analysis often leads to applying ‘quick fixes’ that only address the symptoms of the non-compliance. A peer review of the results of the root-cause analysis may increase its reliability and objectivity.

GM · GM1 21L.A.11(a) — Regulation (EU) No 748/2012 · ED Decision 2023/013/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

AMCAcceptable means of compliance

AMC1 21L.A.11(a)Findings and observations

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FINDINGS — CORRECTIVE ACTION PLAN AND IMPLEMENTATION After receipt of notification of findings, the natural or legal person (‘organisation’) should identify and define the action for all findings, to address the effects of the non-compliance, as well as the root cause(s) and contributing factor(s). Depending on the issues identified, the organisation may need to take immediate corrective action. The respective corrective action plan should: include the rectification of the issue, corrective and preventive action, as well as the planning to implement them; and be timely submitted to the competent authority for acceptance before it is effectively implemented. After receiving the competent authority’s acceptance of the corrective action plan, the organisation should implement the associated action. Within the agreed period, the organisation should inform the competent authority that the corrective action plan has been implemented and should send the associated pieces of evidence, on request from the competent authority.

AMC · AMC1 21L.A.11(a) — Regulation (EU) No 748/2012 · ED Decision 2023/013/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

AMCAcceptable means of compliance

AMC1 21L.A.11(b)Findings and observations

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DUE CONSIDERATION TO OBSERVATIONS For each observation that is notified by the competent authority, the natural or legal person (‘organisation’) should analyse the related issues and determine when action is needed. The handling of observations may follow a process similar to the handling of findings by the organisation. The organisation should record the analysis and the related outputs, such as action taken, or the reasons why no action was taken.

AMC · AMC1 21L.A.11(b) — 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

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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