--- title: "General provisions — ANNEX I — Part-DEFINITIONS, ATM/ANS — rule index · Avioverse" description: "General provisions (23 paragraphs), Regulation (EU) 2017/373. Implementing rules, AMC and GM with the official reference on every paragraph." url: "https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general" --- # General provisions ANNEX I — Part-DEFINITIONS · Air Traffic Management / Air Navigation Services · Regulation (EU) 2017/373 1. ## [GM1 2. Aerial work](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-2-aerial-work) and Regulation (EU) No 923/2012 define ‘aerial work’ in a way that is similar but not identical to the way Regulation (EU) No 965/2012 (the ‘Air… 2. ## [GM1 9. Aeronautical data](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-9-aeronautical-data) DAT PROVIDERS Aeronautical data in the context of DAT providers should mean that aeronautical data needed for the functionality of certified aircraft… 3. ## [GM1 20. Air traffic safety electronics personnel (ATSEP)](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-20-air-traffic-safety-electronics-personnel-atsep) AUTHORISED PERSONNEL (a) The achievement of competence is independent of the permission to perform any task. 4. ## [GM2 20. Air traffic safety electronics personnel (ATSEP)](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm2-20-air-traffic-safety-electronics-personnel-atsep) SCOPE The design, testing, installation and commissioning of operational systems and equipment are excluded from the scope of this section. 5. ## [GM1 32. Authoritative source](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-32-authoritative-source) ORGANISATIONS Organisations formally recognised by the State authority to originate and/or publish data, which meets the Data Quality Requirements (DQRs)… 6. ## [GM1 42. Data quality requirements (DQRs)](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-42-data-quality-requirements-dqrs) GENERAL Depending on the data characteristics considered, DQRs are specified as ‘internationally recognised Data Quality Requirements’ (mainly when data… 7. ## [GM1 56. Functional system](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-56-functional-system) SOFTWARE The term ‘software’ is understood to be the computer programmes and corresponding configuration data, including non-developmental software, but… 8. ## [GM1 74. Obstacle](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-74-obstacle) MOBILE OBJECTS Mobile objects may be converted to fixed items in obstacle database taking into account its mobility boundaries. 9. ## [GM1 101. Terrain](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-101-terrain) GENERAL In practical terms, depending on the method of data collection used, terrain represents the continuous surface that exists at the bare Earth, the… 10. ## [GM1 130. Air traffic control clearance or ATC clearance](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-130-air-traffic-control-clearance-or-atc-clearance) GENERAL Throughout the text, the term ‘air traffic control clearance’ is frequently abbreviated to ‘clearance’ when used in appropriate contexts. 11. ## [GM1 138. Assemble](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-138-assemble) AERONAUTICAL DATA The assemble phase includes checking the data and ensuring that detected errors and omissions are rectified. 12. ## [GM1 139. ATS route](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-139-ats-route) TYPES OF ATS ROUTES (a) The term ‘ATS route’ is used to mean variously ‘airway’, ‘advisory route’, ‘controlled route’, ‘uncontrolled route’ (i.e. 13. ## [GM1 141. ATS surveillance system](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-141-ats-surveillance-system) GENERAL A comparable ground-based system is one that has been demonstrated, by comparative assessment or other methodology, to have a level of safety and… 14. ## [GM1 143. Automatic dependent surveillance — contract (ADS-C)](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-143-automatic-dependent-surveillance-contract-ads-c) GENERAL The abbreviated term ‘ADS contract’ is commonly used to refer to ‘ADS event contract’, ‘ADS demand contract’, ‘ADS periodic contract’ or an… 15. ## [GM1 152. Confidence level](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-152-confidence-level) AERONAUTICAL DATA The interval is usually referred to as the accuracy of the estimate. 16. ## [GM1 155. Controlled aerodrome](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-155-controlled-aerodrome) GENERAL The airspace associated with a controlled aerodrome is designed in compliance with the requirements in Annex XI (Part-FPD). 17. ## [GM1 156. Controlled airspace](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-156-controlled-airspace) AIRSPACE CLASSIFICATION Details of the airspace classifications could be found in Section 6 ‘Airspace classification’ and SERA.6001 ‘Classification of… 18. ## [GM1 170. Data product specification](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-170-data-product-specification) AERONAUTICAL DATA A data product specification provides a description of the universe of discourse and a specification for mapping the universe of… 19. ## [GM1 196. Integrity classification](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-196-integrity-classification) AERONAUTICAL DATA Aeronautical data is classified as: routine data: 20. ## [GM1 203. Instrument approach operations](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-203-instrument-approach-operations) NAVIGATION GUIDANCE Lateral and vertical navigation guidance refers to the guidance provided either by: 21. ## [GM1 208. Metadata](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-208-metadata) GENERAL A structured description of the content, quality, condition or other characteristics of data. 22. ## [GM1 232. Significant point](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-232-significant-point) GENERAL There are three categories of significant points: ground-based navigation aid, intersection and waypoint. 23. ## [GM1 (262) ‘SPACE WEATHER CENTRE (SWXC)’](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-262-space-weather-centre-swxc) GENERAL A space weather centre (SWXC) is designated as global and/or regional. 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