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CS ADR-DSN.M.685 Runway end lights

Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7 · Regulation (EU) No 139/2014 · EAR revision 13 Mar 2026

IRImplementing rule

CS ADR-DSN.M.685Runway end lights

(a)Applicability: Runway end lights should be provided for a runway equipped with runway edge lights.

(b)Location and positioning:

(1)Runway end lights should be placed on a line at right angles to the runway axis as near to the end of the runway as possible and, in any case, not more than 3 m outside the end.

(2)Runway end lighting should consist of at least six lights. The lights should be either:

(i)equally spaced between the rows of runway edge lights; or

(ii)symmetrically disposed about the runway centre line in two groups with the lights uniformly spaced in each group and with a gap between the groups of not more than half the distance between the rows of runway edge lights.

(3)For a precision approach runway Category III, the spacing between runway end lights, except between the two innermost lights if a gap is used, should not exceed 6 m.

(c)Characteristics of runway end lights:

(1)Runway end lights should be fixed unidirectional lights showing red in the direction of the runway. The intensity and beam spread of the lights should be adequate for the conditions of visibility and ambient light in which use of the runway is intended.

(2)Runway end lights characteristics on a precision approach runway should be in accordance with the specifications in CS ADR-DSN.U.940, Figure U-12.

(3)Runway end lights on a precision approach runway should be in accordance with the chromaticity specifications in CS ADR-DSN.U.930 and Figure U-1A or U-1B, as appropriate.

[Figure or form omitted from this preview — available in the Avioverse workspace library.] Figure M-7. Arrangement of runway threshold and runway end lights [Figure or form omitted from this preview — available in the Avioverse workspace library.] Figure M-8. Example of approach and runway lighting for runway with displaced thresholds

[Issue: ADR-DSN/3]

[Issue: ADR-DSN/4]

IR · CS ADR-DSN.M.685 — Regulation (EU) No 139/2014 · ED Decision 2017/021/R · Aerodromes Easy Access Rules · EAR revision 13 Mar 2026

All rules in CHAPTER M — VISUAL AIDS FOR NAVIGATION (LIGHTS)

Consolidated from the EASA Easy Access Rules (revision 13 Mar 2026, extracted 17 Aug 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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