List of acronyms and abbreviations

• n/a found in: Information Security (2023/203 and 2022/1645) Part-IS (Dec 2025)

# List of acronyms and abbreviations <table bgcolor="#d9d9d9" cellpadding="7" cellspacing="0"> <col/> <col/> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>Acronym/Abbreviation</b></p> </td> <td bgcolor="#808080"><p align="left"> <b>Means / Stands for</b></p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ACC</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> area control centre</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ACMS</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> aircraft conditioning management system</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>AD</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> airworthiness directive</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>AIM</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> aeronautical information management</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>AIREP</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> air report [typically, about an in-flight event needed to be reported]</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p> <b>A-ISAC</b></p> </td> <td bgcolor="#d9d9d9"><p> Aviation Information Sharing and Analysis Center</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>AISP</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> aeronautical information service provider</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>AMC</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> acceptable means of compliance</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>AOC</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> air operator certificate</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>APP</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> approach [autopilot mode], approach control [radio telephony]</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ARINC</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> aeronautical radio, incorporated [standard]</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ASM</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> airspace management</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ATC</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> air traffic control</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ATCO</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> air traffic controller</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ATCO TO</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> air traffic controller training organisation</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ATFCM</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> air traffic flow and capacity management</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ATM/ANS</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> air traffic management / air navigation services</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ATO</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> approved training organisation</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ATS</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> air traffic services</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ATSP</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> air traffic services provider</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>AU</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> airspace user</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>BPM</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> baggage processed message</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>CAMO</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> continuing airworthiness management organisation</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>CDM</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> collaborative decision-making</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>CERT</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> computer emergency response team</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>CIP</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> continuous improvement process</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>CISO</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> chief information security officer</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>CMS</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> centralised maintenance system [of an aircraft]</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>COBIT</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> control objectives for information and related technology [framework]</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>CRP</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> common responsible person [delegate of the accountable manager to implement information security provisions across organisation parts (ref. point IS.I.OR.240(d))]</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>CSIRT</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> computer security incident response team</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>DCB</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> demand–capacity balancing</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>DLP</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> data loss prevention</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>DMAIC</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> define–measure–analyse–improve–control</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>DOA</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> design organisation approval</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>DoS</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> denial of service</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>DR</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> delegated regulation</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>EAR</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> easy access rules</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>EASA</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> European Union Aviation Safety Agency</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ECCSA</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> European Centre for Cyber Security in Aviation</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>E-CF</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> [European] e-Competence Framework</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ECSF</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> European Cybersecurity Skills Framework</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ED (EASA)</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> Executive Director (of the European Union Aviation Safety Agency)</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>EDR</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> endpoint detection and response</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ED-XXX (EUROCAE)</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> EUROCAE document [standard]</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>EFB</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> electronic flight bag</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>EGNOS</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> European Geostationary Navigation Overlay Service</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ELA2</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> aeroplane with a maximum take-off mass (MTOM) of 2000 kg or less, which is not classified as ‘complex motor-powered aircraft’; [ref. <u><a href="https://www.easa.europa.eu/en/faq/20103">FAQ: When is an organisation, designing a product (aircraft, engine, propeller), exempt from having a DOA?</a></u>]</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ENISA</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> European Union Agency for Cybersecurity</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ER ACC</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> en-route area control centre</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>EU</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> European Union</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>EUROCAE</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> European Organisation for Civil Aviation Equipment</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>EUSPA</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> European Union Agency for the Space Programme</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>FDR</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> flight data recorder</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>FIS</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> flight information service</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>FSTD</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> flight simulation training device</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>GM</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> guidance material</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>GRC</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> governance, risk [management] and compliance</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ICAO</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> International Civil Aviation Organization</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ICT</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> information and communication technology</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>IEC</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> International Electrotechnical Commission</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>IFPS</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> integrated initial flight plan processing system [at EUROCONTROL]</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>IOC</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> indicator of compromise</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>IR</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> implementing regulation</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ISAP</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> information security assessment process</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ISMM</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> information security management manual</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ISMS</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> information security management system</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ISO</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> International Organisation for Standardisation</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>ISP</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> internet service provider</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>IT</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> information technology</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>KPI</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> key performance indicator</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>MET</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> meteorological services</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>NICE</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> National Initiative for Cybersecurity Education</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>NIS (2)</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> Network and Information Systems Directive (2)</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>NIST CSF</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> National Institute of Standards and Technology Cybersecurity Framework</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>NISTIR</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> NIST interagency/internal report</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>NOTAM</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> notice to airmen; notice to air missions; notice to aviators</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>OT</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> operational technology</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>PDCA</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> plan–do–check–act [cycle]</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>PDF</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> portable document format</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>PHMR</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> passagers handicapés ou à mobilité réduite<br/> [EN: passengers with disabilities or limited mobility]</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>PNR</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> passenger name record</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>POA</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> production organisation approval</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>QAR</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> quick-access recorder</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>QNH</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> altimeter setting equal to local average sea-level pressure</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>RBAC</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> role-based access control</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>RF</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> radio frequency</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>RPAS</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> remotely piloted aircraft system</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>SAB</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> Security Accreditation Board [EUSPA]</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>SAP</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> safety assessment process</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>SIEM</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> security information and event management</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>SMM</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> safety management manual</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>SMS</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> safety management system</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>SOA</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> statement of applicability</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>SOC</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> security operations centre</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>SW</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> software</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>TIS</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> traffic information service</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>TMA</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> terminal manoeuvring area</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>TOBT</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> target off-block time</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>TTPS</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> tactics, techniques and procedures</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>TWR</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> tower</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>UAS</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> unmanned aircraft system</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>VFR</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> visual flight rules</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>XML</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> extensible markup language</p> </td> </tr> </table>