Aircraft: any machine that can derive support in the atmosphere from the reactions of the air other than the reactions of the air against earth’s surface.

Different categories of aircraft require different aircraft oversight procedures, depending on the regulations they fall under.

Certified aircraft holding standard certificate of airworthiness fall under both EU and national regulations. These aircraft are usually referred to as “EASA aircraft” because European Aviation Safety Agency (EASA) is responsible for their certification on the EU territory.

Some categories of aircraft do not fall under the mandatory EU rules. They are usually referred to as “Annex I aircraft“ after Annex I to the REGULATION (EU) 2018/1139 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 4 July 2018 on common rules in the field of civil aviation and establishing a European Union Aviation Safety Agency , that defines the categories of these aircraft. These aircraft fall under national regulations.

Aircraft engaged in “state activities” (military, customs, police, search and rescue, firefighting, coast guard and similar activities or services) are exempt from application of the Regulation (EU) 2018/11398 when engaged in those specific activities. Those activities are defined in article 2.3.a). These aircraft are subject to national rules.