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21.A.125B Findings and observations

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

IRImplementing rule

21.A.125BFindings and observations

(a)After receipt of the notification of findings in accordance with point 21.B.125, the holder of a letter of agreement shall:

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

2.define a corrective action plan;

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

(b)The actions referred to in point (a) shall be performed within the period agreed with that competent authority in accordance with point 21.B.125.

(c)The observations received in accordance with point 21.B.125(e) shall be given due consideration by the holder of the letter of agreement. The organisation shall record the decisions taken in respect of those observations.

IR · 21.A.125B — Regulation (EU) No 748/2012 · Regulation (EU) 2022/201 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

GMGuidance material

GM1 21.A.125B(a)21.A.158(a) and 21.A.258(a) Findings and observations

Show the text

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 (HF), 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 21.A.125B(a) — Regulation (EU) No 748/2012 · ED Decision 2022/021/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

AMCAcceptable means of compliance

AMC1 21.A.125B(a)(3)21.A.158(a)(3) and 21.A.258(a)(3) Findings and observations

Show the text

FINDING-RELATED CORRECTIVE-ACTION PLAN AND IMPLEMENTATION After receipt of notification of findings, the organisation should identify and define the action for all findings, to address the effects of the non-compliance, as well as its root cause(s) and contributing factor(s). Depending on the issues identified, the organisation may need to take immediate corrective action. The corrective action plan should: include the correction 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 21.A.125B(a)(3) — Regulation (EU) No 748/2012 · ED Decision 2022/021/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

AMCAcceptable means of compliance

AMC1 21.A.125B(c)21.A.158(c), 21.A.258(c) Findings and observations

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DUE CONSIDERATION TO OBSERVATIONS For each observation that is notified by the competent authority, the organisation should analyse the related issues and determine when action is needed. The handling of the observations may follow a process similar to the handling of the 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 21.A.125B(c) — Regulation (EU) No 748/2012 · ED Decision 2022/021/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

GMGuidance material

GM1 21.A.125B(a)21.A.158(a) and 21.A.258(a) Findings and observations

Show the text

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 (HF), 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 21.A.125B(a) — Regulation (EU) No 748/2012 · ED Decision 2022/021/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

AMCAcceptable means of compliance

AMC1 21.A.125B(a)(3)21.A.158(a)(3) and 21.A.258(a)(3) Findings and observations

Show the text

FINDING-RELATED CORRECTIVE-ACTION PLAN AND IMPLEMENTATION After receipt of notification of findings, the organisation should identify and define the action for all findings, to address the effects of the non-compliance, as well as its root cause(s) and contributing factor(s). Depending on the issues identified, the organisation may need to take immediate corrective action. The corrective action plan should: include the correction 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 21.A.125B(a)(3) — Regulation (EU) No 748/2012 · ED Decision 2022/021/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

AMCAcceptable means of compliance

AMC1 21.A.125B(c)21.A.158(c), 21.A.258(c) Findings and observations

Show the text

DUE CONSIDERATION TO OBSERVATIONS For each observation that is notified by the competent authority, the organisation should analyse the related issues and determine when action is needed. The handling of the observations may follow a process similar to the handling of the 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 21.A.125B(c) — Regulation (EU) No 748/2012 · ED Decision 2022/021/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

GMGuidance material

GM1 21.A.125B(a)21.A.158(a) and 21.A.258(a) Findings and observations

Show the text

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 (HF), 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 21.A.125B(a) — Regulation (EU) No 748/2012 · ED Decision 2022/021/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

AMCAcceptable means of compliance

AMC1 21.A.125B(a)(3)21.A.158(a)(3) and 21.A.258(a)(3) Findings and observations

Show the text

FINDING-RELATED CORRECTIVE-ACTION PLAN AND IMPLEMENTATION After receipt of notification of findings, the organisation should identify and define the action for all findings, to address the effects of the non-compliance, as well as its root cause(s) and contributing factor(s). Depending on the issues identified, the organisation may need to take immediate corrective action. The corrective action plan should: include the correction 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 21.A.125B(a)(3) — Regulation (EU) No 748/2012 · ED Decision 2022/021/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

AMCAcceptable means of compliance

AMC1 21.A.125B(c)21.A.158(c), 21.A.258(c) Findings and observations

Show the text

DUE CONSIDERATION TO OBSERVATIONS For each observation that is notified by the competent authority, the organisation should analyse the related issues and determine when action is needed. The handling of the observations may follow a process similar to the handling of the 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 21.A.125B(c) — Regulation (EU) No 748/2012 · ED Decision 2022/021/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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