---
title: "GM1 ADR-DSN.C.230 Slopes on runway end safety areas — Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7, Aerodromes · Avioverse"
description: "Where clearway is provided, the slope on the RESA should be amended accordingly."
url: "https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-c-runway-end-safety-area/gm1-adr-dsn-c-230"
---

# GM1 ADR-DSN.C.230 Slopes on runway end safety areas

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

GM Guidance material

## GM1 ADR-DSN.C.230 Slopes on runway end safety areas

Where [clearway](https://avioverse.aero/glossary/easa/clearway) is provided, the slope on the RESA should be amended accordingly.

GM · GM1 ADR-DSN.C.230 — Regulation (EU) No 139/2014 · ED Decision 2014/013/R · Aerodromes Easy Access Rules · EAR revision 13 Mar 2026

[All rules in CHAPTER C — RUNWAY END SAFETY AREA](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-c-runway-end-safety-area)

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.