--- title: "CS ADR-DSN.L.520 – CS ADR-DSN.L.610: CHAPTER L — VISUAL AIDS FOR NAVIGATION (MARKINGS) (Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7, Aerodromes) — rule index · Avioverse" description: "CS ADR-DSN.L.520 – CS ADR-DSN.L.610, Regulation (EU) No 139/2014. Markings should be of a conspicuous colour and contrast with the surface on which they…" url: "https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings" --- # CHAPTER L — VISUAL AIDS FOR NAVIGATION (MARKINGS) Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7 · Aerodromes · Regulation (EU) No 139/2014 · CS ADR-DSN.L.520 – CS ADR-DSN.L.610 On this page 1. ## [CS ADR-DSN.L.520 General — Colour and conspicuity](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-520) Markings should be of a conspicuous colour and contrast with the surface on which they are laid. 2. ## [GM1 ADR-DSN.L.520 General – Colour and conspicuity](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-520) Where there is insufficient contrast between the marking and the pavement surface, the marking should include an appropriate border. 3. ## [CS ADR-DSN.L.525 Runway designation marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-525) Applicability: A runway designation marking should be provided at the thresholds of a runway. 4. ## [GM1 ADR-DSN.L.525 Runway designation marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-525) intentionally left blank 5. ## [CS ADR-DSN.L.530 Runway centre line marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-530) Applicability: A runway centre line marking should be provided on a paved runway. 6. ## [GM1 ADR-DSN.L.530 Runway centre line marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-530) For the centre line marking the 30 m length of and gap between stripes may be adjusted to take into consideration the runway thresholds locations. 7. ## [CS ADR-DSN.L.535 Threshold marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-535) Applicability: A threshold marking should be provided at the threshold of a runway. 8. ## [GM1 ADR-DSN.L.535 Threshold marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-535) intentionally left blank 9. ## [CS ADR-DSN.L.540 Aiming point marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-540) Applicability: An aiming point marking should be provided at each approach end of an instrument runway where the code number is 2, 3, or 4. 10. ## [GM1 ADR-DSN.L.540 Aiming point marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-540) For runways with widths of 30 m, the width of the rectangular stripes of the aiming point marking and the lateral spacing between the inner sides of the… 11. ## [CS ADR-DSN.L.545 Touchdown zone marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-545) Applicability: A touchdown zone marking should be provided in the touchdown zone of a paved precision approach runway where the code number is 2, 3, or 4. 12. ## [GM1 ADR-DSN.L.545 Touchdown zone marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-545) In order to give information regarding the overall extension of a distance coding touchdown marking, as specified in CS ADR-DSN.L.545, the last pair of… 13. ## [CS ADR-DSN.L.550 Runway side stripe marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-550) Applicability: A runway side stripe marking should be provided between the thresholds of a runway where there is a lack of contrast between the runway… 14. ## [GM1 ADR-DSN.L.550 Runway side stripe marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-550) When turn pads are not available at the end of a runway for back-track manoeuvres and threshold is displaced, in order to better identify full-strength… 15. ## [CS ADR-DSN.L.555 Taxiway centre line marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-555) Applicability: Taxiway centre line marking should be provided on a taxiway, de-icing/anti-icing facility and apron in such a way as to provide continuous… 16. ## [GM1 ADR-DSN.L.555 Taxiway centre line marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-555) The term ‘continuous guidance’ is not intended to require that taxiway centre line markings are provided onto aircraft stands. 17. ## [CS ADR-DSN.L.560 Interruption of runway markings](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-560) At an intersection of two (or more) runways, the markings of the more important runway, except for the runway side stripe marking, should be displayed… 18. ## [GM1 ADR-DSN.L.560 Interruption of runway markings](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-560) At an intersection of a runway and taxiway, the runway side stripe marking should be either continued across the intersection or interrupted. 19. ## [CS ADR-DSN.L.565 Runway turn pad marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-565) Applicability: Where a runway turn pad is provided, a runway turn pad marking should be provided for continuous guidance to enable an aeroplane to… 20. ## [GM1 ADR-DSN.L.565 Runway turn pad marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-565) Where a runway turn pad is not provided, a marking for continuous guidance to enable an aeroplane to complete a 180-degree turn and align with the runway… 21. ## [CS ADR-DSN.L.570 Enhanced taxiway centre line marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-570) Where provided, an enhanced taxiway centre line marking should be installed at each taxiway/runway intersection where it is necessary to denote the… 22. ## [GM1 ADR-DSN.L.570 Enhanced taxiway centre line marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-570) The provision of enhanced taxiway centre line marking may form part of runway incursion prevention measures. 23. ## [CS ADR-DSN.L.575 Runway-holding position marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-575) A runway-holding position marking should be displayed along a runway-holding position. 24. ## [GM1 ADR-DSN.L.575 Runway-holding position marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-575) When the Runway-holding position marking is supplemented with the term ‘CAT II’ or ‘CAT III’ on the areas or taxiways exceeding 60 m in accordance with… 25. ## [CS ADR-DSN.L.580 Intermediate holding position marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-580) Applicability: An intermediate holding position marking should be displayed along an intermediate holding position. 26. ## [GM1 ADR-DSN.L.580 Intermediate holding position marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-580) intentionally left blank 27. ## [CS ADR-DSN.L.585 VOR aerodrome checkpoint marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-585) Applicability: When a VOR aerodrome check-point is established, it should be indicated by a VOR aerodrome check-point marking and sign. 28. ## [GM1 ADR-DSN.L.585 VOR aerodrome checkpoint marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-585) Further guidance on the selection of sites for VOR aerodrome checkpoints is given in ICAO Annex 10, Volume I, Attachment E. 29. ## [CS ADR-DSN.L.590 Aircraft stand marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-590) Applicability: Aircraft stand markings should be provided for designated parking positions on an apron and on a de-icing/anti-icing facility. 30. ## [GM1 ADR-DSN.L.590 Aircraft stand marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-590) The distances to be maintained between the stop line and the lead-in line may vary according to different aircraft types, taking into account the pilot’s… 31. ## [CS ADR-DSN.L.595 Apron safety lines](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-595) Applicability: Apron safety lines should be provided on an apron as required by the parking configurations and ground facilities. 32. ## [GM1 ADR-DSN.L.595 Apron safety lines](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-595) Ground equipment and vehicles should be kept outside predetermined limits when aircraft are manoeuvring or when the equipment is left unattended. 33. ## [CS ADR-DSN.L.597 Apron service road marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-597) Applicability: The limits of an apron service road, should be defined by apron service road markings. 34. ## [GM1 ADR-DSN.L.597 Apron service road marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-597) The term service road encompasses also other types of roads, such as the perimeter service roads, which are used to provide access to security or… 35. ## [CS ADR-DSN.L.600 Road-holding position marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-600) Applicability: A road-holding position marking should be provided at all road entrances or intersections to a runway or a taxiway. 36. ## [GM1 ADR-DSN.L.600 Road-holding position marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-600) Where a road that accesses a runway or a taxiway is unpaved, it may not be possible to install markings. 37. ## [CS ADR-DSN.L.605 Mandatory instruction marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-605) Applicability: Where a mandatory instruction sign in accordance with CS ADR-DSN.N.780 is not installed, a mandatory instruction marking should be… 38. ## [GM1 ADR-DSN.L.605 Mandatory instruction marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-605) Except where operationally required, a mandatory instruction marking should not be located on a runway. 39. ## [CS ADR-DSN.L.610 Information marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/cs-adr-dsn-l-610) Applicability: Where an information sign in accordance with CS ADR-DSN.N.785 is not installed, an information marking should be displayed on the surface… 40. ## [GM1 ADR-DSN.L.610 Information marking](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-l-visual-aids-for-navigation-markings/gm1-adr-dsn-l-610) Applicability: Where operationally required information sign should be supplemented by a marking on the pavement surface. Consolidated from the EASA Easy Access Rules (revision 13 Mar 2026, 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. Share [LinkedIn](https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Favioverse.aero%2Fregulations%2Feasa%2Faerodromes%2Fcs-adr-dsn%2Fchapter-l-visual-aids-for-navigation-markings)[X](https://twitter.com/intent/tweet?url=https%3A%2F%2Favioverse.aero%2Fregulations%2Feasa%2Faerodromes%2Fcs-adr-dsn%2Fchapter-l-visual-aids-for-navigation-markings\&text=CHAPTER%C2%A0L%C2%A0%E2%80%94%C2%A0VISUAL%20AIDS%20FOR%20NAVIGATION%20\(MARKINGS\)%20%E2%80%94%20Aerodromes)