--- title: "CS ADR-DSN.M.615 – CS ADR-DSN.M.771: CHAPTER M — VISUAL AIDS FOR NAVIGATION (LIGHTS) (Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7, Aerodromes) — rule index · Avioverse" description: "CS ADR-DSN.M.615 – CS ADR-DSN.M.771, Regulation (EU) No 139/2014. Elevated approach lights: Elevated approach lights and their supporting structures…" url: "https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights" --- # CHAPTER M — VISUAL AIDS FOR NAVIGATION (LIGHTS) Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7 · Aerodromes · Regulation (EU) No 139/2014 · CS ADR-DSN.M.615 – CS ADR-DSN.M.771 On this page 1. ## [CS ADR-DSN.M.615 General](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-615) Elevated approach lights: Elevated approach lights and their supporting structures should be frangible except that, in that portion of the approach… 2. ## [GM1 ADR-DSN.M.615 General](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-615) Aeronautical ground lights near navigable waters should be taken into consideration to ensure that the lights do not cause confusion to mariners. 3. ## [CS ADR-DSN.M.620 Aeronautical beacons](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-620) General (1) When operationally necessary an aerodrome beacon or identification beacon should be provided at each aerodrome intended for use at night. 4. ## [GM1 ADR-DSN.M.620 Aeronautical beacons](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-620) intentionally left blank 5. ## [CS ADR-DSN.M.625 Approach lighting systems](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-625) The safety objective of the approach lighting system is to provide alignment and roll guidance, and limited distance-to-go information to enable safe… 6. ## [GM1 ADR-DSN.M.625 Approach lighting systems](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-625) Types and characteristics (1) The approach lighting patterns that have been generally adopted are shown in Figures M-1 and M-2. 7. ## [CS ADR-DSN.M.626 Simple approach lighting systems](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-626) Location and composition: A simple approach lighting system should consist of a row of lights on the extended centre line of the runway extending… 8. ## [GM1 ADR-DSN.M.626 Simple approach lighting systems](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-626) intentionally left blank 9. ## [CS ADR-DSN.M.630 Precision approach Category I lighting system](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-630) The safety objective of the approach lighting system is to provide alignment and roll guidance, and limited distance-to-go information to enable safe… 10. ## [GM1 ADR-DSN.M.630 Precision approach Category I lighting system](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-630) The installation of an approach lighting system of less than 900 m in length may result in operational limitations on the use of the runway. 11. ## [CS ADR-DSN.M.635 Precision approach Category II and III lighting system](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-635) Location and composition: The approach lighting system should consist of a row of lights on the extended centre line of the runway, extending, wherever… 12. ## [GM1 ADR-DSN.M.635 Precision approach Category II and III lighting system](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-635) The length of 900 m is based on providing guidance for operations under Category I, II and III conditions. 13. ## [CS ADR-DSN.M.640 Visual approach slope indicator systems](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-640) The safety objective of visual approach slope indicators is to provide information on the approach angle necessary to maintain a safe height over… 14. ## [GM1 ADR-DSN.M.640 Visual approach slope indicator systems](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-640) Factors that should be considered when making a decision on which runway on an aerodrome should receive first priority for the installation of a visual… 15. ## [CS ADR-DSN.M.645 Precision approach path indicator and Abbreviated precision approach path indicator (PAPI and APAPI)](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-645) A PAPI or APAPI should be in accordance with the specifications provided in paragraphs CS ADR-DSN.M.645 to CS ADR-DSN.M.655. 16. ## [GM1 ADR-DSN.M.645 Precision approach path indicator and Abbreviated precision approach path indicator (PAPI and APAPI)](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-645) intentionally left blank \[Issue: ADR-DSN/3] 17. ## [CS ADR-DSN.M.650 Approach slope and elevation setting of light units for PAPI and APAPI](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-650) Approach slope: The approach slope as defined in Figure M-5, should be so designed to be appropriate for use by the aeroplanes in the approach. 18. ## [GM1 ADR-DSN.M.650 Approach slope and elevation setting of light units for PAPI and APAPI](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-650) intentionally left blank \[Issue: ADR-DSN/3] 19. ## [CS ADR-DSN.M.655 Obstacle protection surface for PAPI and APAPI](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-655) Applicability: An obstacle protection surface should be established when it is intended to provide a visual approach slope indicator system. 20. ## [GM1 ADR-DSN.M.655 Obstacle protection surface for PAPI and APAPI](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-655) The displacement of the system upwind of the threshold reduces the operational landing distance. 21. ## [CS ADR-DSN.M.660 Circling guidance lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-660) Applicability: Circling guidance lights should be provided when existing approach and runway lighting systems do not satisfactorily permit identification… 22. ## [GM1 ADR-DSN.M.660 Circling guidance lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-660) intentionally left blank 23. ## [CS ADR-DSN.M.665 Runway lead-in lighting systems](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-665) Applicability: A runway lead-in lighting system should be provided to avoid hazardous terrain. 24. ## [GM1 ADR-DSN.M.665 Runway lead-in lighting systems](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-665) Applicability: A runway lead-in lighting system may be provided for purposes of noise abatement routing. 25. ## [CS ADR-DSN.M.670 Runway threshold identification lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-670) Applicability: The inclusion of specifications for runway threshold identification lights is not intended to imply that the runway threshold… 26. ## [GM1 ADR-DSN.M.670 Runway threshold identification lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-670) intentionally left blank \[Issue: ADR-DSN/4] 27. ## [CS ADR-DSN.M.675 Runway edge lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-675) Applicability: Runway edge lights should be provided for a runway intended for use at night or for a precision approach runway intended for use by day or… 28. ## [GM1 ADR-DSN.M.675 Runway edge lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-675) intentionally left blank 29. ## [CS ADR-DSN.M.680 Runway threshold and wing bar lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-680) Applicability of runway threshold: Runway threshold lights should be provided for a runway equipped with runway edge lights, except on a non-instrument… 30. ## [GM1 ADR-DSN.M.680 Runway threshold and wing bar lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-680) intentionally left blank 31. ## [CS ADR-DSN.M.685 Runway end lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-685) Applicability: Runway end lights should be provided for a runway equipped with runway edge lights. 32. ## [GM1 ADR-DSN.M.685 Runway end lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-685) When the threshold is at the runway extremity, fittings serving as threshold lights may be used as runway end lights. 33. ## [CS ADR-DSN.M.690 Runway centre line lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-690) The safety objective of runway centre line lights is to facilitate safe take-off and landing. 34. ## [GM1 ADR-DSN.M.690 Runway centre line lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-690) Runway centre line lights should be provided on a precision approach runway Category I when the runway is used by aircraft with high landing speeds or… 35. ## [CS ADR-DSN.M.695 Runway touchdown zone lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-695) Applicability: Touchdown zone lights should be provided in the touchdown zone of a precision approach runway Category II or III. 36. ## [GM1 ADR-DSN.M.695 Runway touchdown zone lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-695) To allow for operations at lower visibility minima, it may be advisable to use a 30 m longitudinal spacing between barrettes. 37. ## [CS ADR-DSN.M.696 Simple touchdown zone lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-696) The purpose of simple touchdown zone lights is to provide pilots with enhanced situational awareness in all visibility conditions and to help enable… 38. ## [GM1 ADR-DSN.M.696 Simple touchdown zone lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-696) Simple touchdown zone lights should be supplied with power on a separate circuit to other runway lighting so that they may be used when other lighting is… 39. ## [CS ADR-DSN.M.700 Rapid exit taxiway indicator lights (RETILs)](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-700) Applicability: The inclusion of specifications for RETILs is not intended to imply that RETILs have to be provided at an aerodrome. 40. ## [GM1 ADR-DSN.M.700 Rapid exit taxiway indicator lights (RETILs)](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-700) In low visibility conditions, rapid exit taxiway indicator lights provide useful situational awareness cues while allowing the pilot to concentrate on… 41. ## [CS ADR-DSN.M.705 Stopway lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-705) Applicability: Stopway lights should be provided for a stopway intended for use at night, or in runway visual range conditions less than a value of 800 m. 42. ## [GM1 ADR-DSN.M.705 Stopway lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-705) intentionally left blank 43. ## [CS ADR-DSN.M.706 Runway status lights (RWSL)](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-706) Applicability: The inclusion of detailed specification for RWSL is not intended to imply that RWSL have to be provided at an aerodrome. 44. ## [GM1 ADR-DSN.M.706 Runway status lights (RWSLs)](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-706) Where two or more runway-holding positions are provided, the runway-holding position referred is that closest to the runway. 45. ## [CS ADR-DSN.M.710 Taxiway centre line lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-710) The safety objective of taxiway centre line lights is to provide guidance for the safe taxi of aircraft as described in paragraph (b). 46. ## [GM1 ADR-DSN.M.710 Taxiway centre line lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-710) In the case where taxiway centre line lights are provided and where there may be a need to delineate the edges of a taxiway, e.g. 47. ## [CS ADR-DSN.M.715 Taxiway centre line lights on taxiways, runways, rapid exit taxiways, or on other exit taxiways](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-715) The safety objective of taxiway centre line lights is to provide guidance for the safe taxi of aircraft as described in paragraph (b). 48. ## [GM1 ADR-DSN.M.715 Taxiway centre line lights on taxiways, runways, rapid exit taxiways, or on other exit taxiways](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-715) intentionally left blank 49. ## [CS ADR-DSN.M.720 Taxiway edge lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-720) Applicability: Taxiway edge lights should be provided at the edges of a runway turn pad, holding bay, de-icing/anti-icing facility, apron, etc. 50. ## [GM1 ADR-DSN.M.720 Taxiway edge lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-720) intentionally left blank 51. ## [CS ADR-DSN.M.725 Runway turn pad lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-725) The safety objective of runway turn pad lights is to provide additional guidance on a runway turn pad to enable an aeroplane to complete a safe… 52. ## [GM1 ADR-DSN.M.725 Runway turn pad lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-725) intentionally left blank 53. ## [CS ADR-DSN.M.730 Stop bars](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-730) Applicability: A stop bar should be provided at every runway-holding position serving a runway when it is intended that the runway should be used in… 54. ## [GM1 ADR-DSN.M.730 Stop bars](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-730) A stop bar is intended to be controlled either manually or automatically by air traffic services. 55. ## [CS ADR-DSN.M.735 Intermediate holding position lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-735) Applicability: Except where a stop bar has been installed, intermediate holding position lights should be provided at an intermediate holding position… 56. ## [GM1 ADR-DSN.M.735 Intermediate holding position lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-735) intentionally left blank 57. ## [CS ADR-DSN.M.740 De-icing/anti-icing facility exit lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-740) Applicability: The purpose of the de-icing/anti-icing facility exit lights is to indicate the exit boundary of a remote de-icing/anti-icing facility… 58. ## [GM1 ADR-DSN.M.740 De-icing/anti-icing facility exit lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-740) intentionally left blank 59. ## [CS ADR-DSN.M.745 Runway guard lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-745) The safety objective of the runway guard lights is to warn pilots and drivers of vehicles, when operating on taxiways, that they are about to enter a… 60. ## [GM1 ADR-DSN.M.745 Runway guard lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-745) Runway incursions may take place in all visibility or weather conditions. 61. ## [CS ADR-DSN.M.750 Apron floodlighting](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-750) The purpose of apron floodlighting is to facilitate safe operations on an apron, on a de-icing/anti-icing facility, and on a designated isolated aircraft… 62. ## [GM1 ADR-DSN.M.750 Apron floodlighting](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-750) Where a de-icing/anti-icing facility is located in close proximity to the runway and permanent floodlighting could be confusing to pilots, other means of… 63. ## [CS ADR-DSN.M.755 Visual docking guidance system](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-755) Applicability: A visual docking guidance system should be provided when it is intended to indicate, by a visual aid, the precise positioning of an… 64. ## [GM1 ADR-DSN.M.755 Visual docking guidance system](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-755) The factors to be considered in evaluating the need for a visual docking guidance system are in particular: 65. ## [CS ADR-DSN.M.760 Advanced visual docking guidance system](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-760) Applicability: Advanced visual docking guidance system (A-VDGS) should be provided where it is operationally desirable to confirm the correct aircraft… 66. ## [GM1 ADR-DSN.M.760 Advanced visual docking guidance system](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-760) Advanced visual docking guidance systems should include those systems that, in addition to basic and passive azimuth, and stop position information… 67. ## [CS ADR-DSN.M.765 Aircraft stand manoeuvring guidance lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-765) Applicability: Aircraft stand manoeuvring guidance lights should be provided to facilitate the positioning of an aircraft on an aircraft stand on a paved… 68. ## [GM1 ADR-DSN.M.765 Aircraft stand manoeuvring guidance lights](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-765) intentionally left blank 69. ## [CS ADR-DSN.M.770 Road-holding position light](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-770) Applicability: A road-holding position light should be provided at each road-holding position serving a runway when it is intended that the runway should… 70. ## [GM1 ADR-DSN.M.770 Road-holding position light](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-770) Where a road intersects a taxiway where operationally required, a suitable holding position light may be located adjacent to the roadway/taxiway… 71. ## [CS ADR-DSN.M.771 No-entry bar](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/cs-adr-dsn-m-771) Applicability: A no-entry bar should be provided across a taxiway which is intended to be used as an exit only taxiway. 72. ## [GM1 ADR-DSN.M.771 No-entry bar](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-771) Runway incursions may take place in all visibility or weather conditions. 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-m-visual-aids-for-navigation-lights)[X](https://twitter.com/intent/tweet?url=https%3A%2F%2Favioverse.aero%2Fregulations%2Feasa%2Faerodromes%2Fcs-adr-dsn%2Fchapter-m-visual-aids-for-navigation-lights\&text=CHAPTER%C2%A0M%C2%A0%E2%80%94%C2%A0VISUAL%20AIDS%20FOR%20NAVIGATION%20\(LIGHTS\)%20%E2%80%94%20Aerodromes)