---
title: "CS ADR-DSN.R.865 Pre-threshold area — Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7, Aerodromes · Avioverse"
description: "Applicability of Pre-threshold area: When the surface before a threshold is paved and exceeds 60 m in length, and is not suitable for normal use by…"
url: "https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-r-visual-aids-for-denoting-restricted-use/cs-adr-dsn-r-865"
---

# CS ADR-DSN.R.865 Pre-threshold area

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

IR Implementing rule

## CS ADR-DSN.R.865 Pre-threshold area

(a) Applicability of Pre-[threshold](https://avioverse.aero/glossary/easa/threshold) area: When the surface before a threshold is paved and exceeds 60 m in length, and is not suitable for normal use by [aircraft](https://avioverse.aero/glossary/easa/aircraft), the entire length before the threshold should be marked with a chevron [marking](https://avioverse.aero/glossary/easa/marking).

(b) Location: A chevron marking should point in the direction of the [runway](https://avioverse.aero/glossary/easa/runway) and be placed as shown in Figure R-2.

(c) Characteristics: A chevron marking should be of conspicuous colour and contrast with the colour used for the runway markings; it should preferably be yellow and should have an overall width of at least 0.9 m.

\[Figure or form omitted from this preview — available in the Avioverse workspace library.]

Figure R-2. Pre-threshold area marking

IR · CS ADR-DSN.R.865 — Regulation (EU) No 139/2014 · ED Decision 2014/013/R · Aerodromes Easy Access Rules · EAR revision 13 Mar 2026

[All rules in CHAPTER R — VISUAL AIDS FOR DENOTING RESTRICTED USE AREAS](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-r-visual-aids-for-denoting-restricted-use)

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.