---
title: "CS ADR-DSN.S.875 – CS ADR-DSN.S.895: CHAPTER S — ELECTRICAL SYSTEMS (Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7, Aerodromes) — rule index · Avioverse"
description: "CS ADR-DSN.S.875 – CS ADR-DSN.S.895, Regulation (EU) No 139/2014. Adequate primary power supply should be available at aerodromes for the safe…"
url: "https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-s-electrical-systems"
---

# CHAPTER S — ELECTRICAL SYSTEMS

Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7 · Aerodromes · Regulation (EU) No 139/2014 · CS ADR-DSN.S.875 – CS ADR-DSN.S.895

On this page

1. ## [CS ADR-DSN.S.875 Electrical power supply systems for air navigation facilities](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-s-electrical-systems/cs-adr-dsn-s-875)

   Adequate primary power supply should be available at aerodromes for the safe functioning of air navigation facilities.

2. ## [GM1 ADR-DSN.S.875 Electrical power supply systems for air navigation facilities](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-s-electrical-systems/gm1-adr-dsn-s-875)

   The safety of operations at aerodromes depends on the quality of the supplied power.

3. ## [CS ADR-DSN.S.880 Electrical power supply systems](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-s-electrical-systems/cs-adr-dsn-s-880)

   For a precision approach runway, a secondary power supply capable of meeting the requirements of Table S-1 for the appropriate category of precision…

4. ## [GM1 ADR-DSN.S.880 Electrical power supply](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-s-electrical-systems/gm1-adr-dsn-s-880)

   At an aerodrome where the primary runway is a non-instrument runway, a secondary power supply capable of meeting the requirements of CS ADR-DSN.S.875(d)…

5. ## [CS ADR-DSN.S.885 System design](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-s-electrical-systems/cs-adr-dsn-s-885)

   For a runway meant for use in runway visual range conditions less than a value of 550 m, the electrical systems for the power supply, lighting, and…

6. ## [GM1 ADR-DSN.S.885 System design](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-s-electrical-systems/gm1-adr-dsn-s-885)

   Guidance on means of providing this protection is given in ICAO Doc 9157, Aerodrome Design Manual, Part 5, Electrical Systems.

7. ## [CS ADR-DSN.S.890 Monitoring](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-s-electrical-systems/cs-adr-dsn-s-890)

   A system of monitoring should be employed to indicate the operational status of the lighting systems.

8. ## [GM1 ADR-DSN.S.890 Monitoring](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-s-electrical-systems/gm1-adr-dsn-s-890)

   For a runway meant for use in runway visual range conditions less than a value of 550 m, the minimum serviceability level of any element of the lighting…

9. ## [CS ADR-DSN.S.895](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-s-electrical-systems/cs-adr-dsn-s-895)

   Intentionally left bank \[Issue: ADR-DSN/3] \[Issue: ADR-DSN/5]

10. ## [GM1 ADR-DSN.S.895](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-s-electrical-systems/gm1-adr-dsn-s-895)

    Intentionally left bank \[Issue: ADR-DSN/3] \[Issue: ADR-DSN/5]

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.

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