---
title: "CS ADR-DSN.B.175 Grading of runway strips — Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7, Aerodromes · Avioverse"
description: "That portion of a strip of an instrument runway within a distance of at least:"
url: "https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-b-runways/cs-adr-dsn-b-175"
---

# CS ADR-DSN.B.175 Grading of runway strips

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.B.175 Grading of runway strips

(a) That portion of a strip of an [instrument runway](https://avioverse.aero/glossary/easa/instrument-runway) within a distance of at least:

(1) 75 m where the code number is 3 or 4; and

(2) 40 m where the code number is 1 or 2;

from the centre line of the [runway](https://avioverse.aero/glossary/easa/runway) and its extended centre line should provide a [graded area](https://avioverse.aero/glossary/easa/graded-area) for aeroplanes which the runway is intended to serve in the event of an [aeroplane](https://avioverse.aero/glossary/easa/aeroplane) running off the runway.

(b) That portion of a strip of a [non-instrument runway](https://avioverse.aero/glossary/easa/non-instrument-runway) within a distance of at least:

(1) 75 m where the code number is 3 or 4;

(2) 40 m where the code number is 2; and

(3) 30 m where the code number is 1;

from the centre line of the runway and its extended centre line should provide a graded area for aeroplanes which the runway is intended to serve in the event of an aeroplane running off the runway.

(c) The surface of that portion of a strip that abuts a runway, [shoulder](https://avioverse.aero/glossary/easa/shoulder), or [stopway](https://avioverse.aero/glossary/easa/stopway) should be flush with the surface of the runway, shoulder, or stopway.

(d) That portion of a strip to at least 30 m before the start of a runway should be prepared against blast erosion in order to protect a landing aeroplane from the danger of an exposed edge.

\[Issue: ADR-DSN/4]

IR · CS ADR-DSN.B.175 — Regulation (EU) No 139/2014 · ED Decision 2017/021/R · Aerodromes Easy Access Rules · EAR revision 13 Mar 2026

[All rules in CHAPTER B — RUNWAYS](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-b-runways)

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.