--- title: "List of acronyms and abbreviations — Cover Regulation, Part-IS · Avioverse" description: "Acronym/Abbreviation Means / Stands for ACC area control centre ACMS aircraft conditioning management system AD airworthiness directive AIM aeronautical…" url: "https://avioverse.aero/regulations/easa/part-is/cover-regulation/general/list-of-acronyms-and-abbreviations" --- # List of acronyms and abbreviations Cover Regulation · Regulations (EU) 2023/203 and 2022/1645 · EAR revision 5 Dec 2025 IR Implementing rule ## List of acronyms and abbreviations | Acronym/Abbreviation | Means / Stands for | | -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | ACC | area control centre | | ACMS | aircraft conditioning management system | | AD | airworthiness directive | | AIM | aeronautical information management | | AIREP | air report \[typically, about an in-flight event needed to be reported] | | A-ISAC | Aviation Information Sharing and Analysis Center | | AISP | aeronautical information service provider | | AMC | acceptable means of compliance | | AOC | air operator certificate | | APP | approach \[autopilot mode], approach control \[radio telephony] | | ARINC | aeronautical radio, incorporated \[standard] | | ASM | airspace management | | ATC | air traffic control | | ATCO | air traffic controller | | ATCO TO | air traffic controller training organisation | | ATFCM | air traffic flow and capacity management | | ATM/ANS | air traffic management / air navigation services | | ATO | approved training organisation | | ATS | air traffic services | | ATSP | air traffic services provider | | AU | airspace user | | BPM | baggage processed message | | CAMO | continuing airworthiness management organisation | | CDM | collaborative decision-making | | CERT | computer emergency response team | | CIP | continuous improvement process | | CISO | chief [information security](https://avioverse.aero/glossary/easa/information-security) officer | | CMS | centralised maintenance system \[of an aircraft] | | COBIT | control objectives for information and related technology \[framework] | | CRP | common responsible person \[delegate of the accountable manager to implement information security provisions across organisation parts (ref. point IS.I.OR.240(d))] | | CSIRT | computer security [incident](https://avioverse.aero/glossary/easa/incident) response team | | DCB | demand–capacity balancing | | DLP | data loss prevention | | DMAIC | define–measure–analyse–improve–control | | DOA | design organisation approval | | DoS | denial of service | | DR | delegated regulation | | EAR | easy access rules | | EASA | European Union Aviation Safety Agency | | ECCSA | European Centre for Cyber Security in Aviation | | E-CF | \[European] e-Competence Framework | | ECSF | European Cybersecurity Skills Framework | | ED (EASA) | Executive Director (of the European Union Aviation Safety Agency) | | EDR | endpoint detection and response | | ED-XXX (EUROCAE) | EUROCAE document \[standard] | | EFB | electronic flight bag | | EGNOS | European Geostationary Navigation Overlay Service | | ELA2 | aeroplane with a maximum take-off mass (MTOM) of 2000 kg or less, which is not classified as ‘complex motor-powered aircraft’; \[ref. FAQ: When is an organisation, designing a product (aircraft, engine, propeller), exempt from having a DOA?] | | ENISA | European Union Agency for Cybersecurity | | ER ACC | en-route area control centre | | EU | European Union | | EUROCAE | European Organisation for Civil Aviation Equipment | | EUSPA | European Union Agency for the Space Programme | | FDR | flight data recorder | | FIS | flight information service | | FSTD | flight simulation training device | | GM | guidance material | | GRC | governance, risk \[management] and compliance | | ICAO | International Civil Aviation Organization | | ICT | information and communication technology | | IEC | International Electrotechnical Commission | | IFPS | integrated initial flight plan processing system \[at EUROCONTROL] | | IOC | indicator of compromise | | IR | implementing regulation | | ISAP | information security assessment process | | ISMM | information security management manual | | ISMS | information security management system | | ISO | International Organisation for Standardisation | | ISP | internet service provider | | IT | information technology | | KPI | key performance indicator | | MET | meteorological services | | NICE | National Initiative for Cybersecurity Education | | NIS (2) | Network and Information Systems Directive (2) | | NIST CSF | National Institute of Standards and Technology Cybersecurity Framework | | NISTIR | NIST interagency/internal report | | NOTAM | notice to airmen; notice to air missions; notice to aviators | | OT | operational technology | | PDCA | plan–do–check–act \[cycle] | | PDF | portable document format | | PHMR | passagers handicapés ou à mobilité réduite \[EN: passengers with disabilities or limited mobility] | | PNR | passenger name record | | POA | production organisation approval | | QAR | quick-access recorder | | QNH | altimeter setting equal to local average sea-level pressure | | RBAC | role-based access control | | RF | radio frequency | | RPAS | remotely piloted aircraft system | | SAB | Security Accreditation Board \[EUSPA] | | SAP | safety assessment process | | SIEM | security information and event management | | SMM | safety management manual | | SMS | safety management system | | SOA | statement of applicability | | SOC | security operations centre | | SW | software | | TIS | traffic information service | | TMA | terminal manoeuvring area | | TOBT | target off-block time | | TTPS | tactics, techniques and procedures | | TWR | tower | | UAS | unmanned aircraft system | | VFR | visual flight rules | | XML | extensible markup language | IR — Regulations (EU) 2023/203 and 2022/1645 · n/a · Part-IS Easy Access Rules · EAR revision 5 Dec 2025 [All rules in General provisions](https://avioverse.aero/regulations/easa/part-is/cover-regulation/general) Consolidated from the EASA Easy Access Rules (revision 5 Dec 2025, extracted 13 Oct 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.