EASA IR, AMC and GM – what is the difference?
Last updated: 2026-08-19 · Complyx Systems AB
IR (Implementing Rules) are legally binding. AMC (Acceptable Means of Compliance) describe an accepted way to meet an IR; deviating requires an approved AltMoC. GM (Guidance Material) explains and illustrates but creates no requirements of its own.
The three levels
| Level | Legal status | Practical meaning |
|---|---|---|
| IR | Binding EU regulation | Must be complied with. |
| AMC | Accepted means of compliance | Default route; deviation requires approved AltMoC. |
| GM | Guidance | Explanatory only; never a requirement line. |
Why it matters in a requirement checklist
Treating GM as binding inflates the requirement set and shifts focus away from actual obligations. Break each IR clause into atomic, verifiable sub-requirements, attach the applicable AMC as a reference, and use GM only for interpretation and training.
Frequently asked questions
Is AMC mandatory?
No, but it is the pre-accepted route. Any alternative needs an approved AltMoC.
Can GM be used as audit evidence?
GM may justify an approach, but compliance is always demonstrated against the IR.
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.