Glossary: aviation compliance terms
Last updated: 2026-08-19 · Complyx Systems AB
The table below defines the terms that recur in EASA regulations and day-to-day compliance work.
Regulations and requirements
| Term | Meaning |
|---|---|
| IR – Implementing Rule | Binding requirement in an EU regulation. |
| AMC – Acceptable Means of Compliance | Accepted way of meeting an IR. |
| GM – Guidance Material | Explanatory guidance without requirements. |
| AltMoC | Alternative means of compliance, subject to authority approval. |
| SARP | ICAO Standards and Recommended Practices. |
Management systems and audits
| Term | Meaning |
|---|---|
| CMS | Compliance Monitoring System. |
| SMS | Safety Management System. |
| ISMS | Information Security Management System under Part-IS. |
| Finding | Identified non-conformity against a requirement. |
| Observation | Issue that is not yet a non-conformity. |
| Auditee | The audited party answering the audit questions. |
| Root cause analysis | Analysis of the underlying cause of a finding. |
Frequently asked questions
What is the difference between a finding and an observation?
A finding is a confirmed non-conformity against a requirement; an observation is an issue that does not yet constitute one.
Sources
About ComplyxIQ
ComplyxIQ is an AI-supported compliance system from Complyx Systems AB for the aviation industry: requirement breakdown against EASA and ICAO, pedagogical requirement explanations, risk-based audit planning and traceable findings management. All data is stored within the EU and decisions always remain with your experts.