ED Decision 2026/006/R
GENERAL
(a) Preventive action is the action to eliminate the cause of a potential non-compliance or other undesirable potential situation and prevent recurrence of an existing detected non-compliance or other undesirable condition or situation.
(b) Corrective action is the action to eliminate or mitigate the root cause(s) of a detected non-compliance.
(c) Correction is the action to eliminate a detected non-compliance.
ROOT CAUSE ANALYSIS
(d) The organisation operating the FSTD may perform a root cause analysis or use another appropriate tool to identify the root cause of the non-compliance. Proper determination of the root cause is crucial for defining effective corrective actions to prevent reoccurrence of the non-compliance on the FSTD.
(e) 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 a non-compliance often requires an overarching view of the circumstances that led to it, to identify all possible systematic and contributing factors (human factors, regulatory, organisational, technical factors, etc.) in addition to the direct factors.
(f) 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 non-compliance, and therefore, there is a risk that important factors that must be considered to prevent reoccurrence will be ignored. Such an insufficient 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.
(g) The analysis should consider whether the non-compliance equally affects other FSTDs operated by the organisation.
[applicable from 30 April 2028 — ED Decision 2026/006/R]
GM1 ORA.FSTD.100(c) requires the organisation operating the FSTD to perform root cause analysis focusing on why, not who, and to consider whether non-compliance affects other FSTDs, with peer review as a reliability tool
* Summary by Aviation.Bot - Always consult the original document for the most accurate information.
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