---
title: "CS ADR-DSN.B.165 Objects on runway strips — Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7, Aerodromes · Avioverse"
description: "An object situated on a runway strip which may endanger aeroplanes should be regarded as an obstacle and should, as far as practicable, be removed."
url: "https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-b-runways/cs-adr-dsn-b-165"
---

# CS ADR-DSN.B.165 Objects on 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.165 Objects on runway strips

(a) An object situated on a [runway strip](https://avioverse.aero/glossary/easa/runway-strip) which may endanger aeroplanes should be regarded as an [obstacle](https://avioverse.aero/glossary/easa/obstacle) and should, as far as practicable, be removed.

(b) No fixed object, other than [visual aids](https://avioverse.aero/glossary/easa/visual-aids) required for air navigation or those required for [aircraft](https://avioverse.aero/glossary/easa/aircraft) safety purposes and which must be sited on the runway strip, and satisfying the relevant [frangibility](https://avioverse.aero/glossary/easa/frangibility) requirement in Chapter T, should be permitted on a runway strip:

(1) within 77.5 m of the [runway](https://avioverse.aero/glossary/easa/runway) centre line of a precision approach runway Category I, II or III where the code number is 4 and the code letter is F; or

(2) within 60 m of the runway centre line of a precision approach runway Category I, II or III where the code number is 3 or 4; or

(3) within 45 m of the runway centre line of a precision approach runway Category I where the code number is 1 or 2.

(c) To eliminate a buried vertical surface on objects situated on a graded portion of the runway strip, a slope should be provided to minimise hazards to aeroplanes running off the runway.

\[Issue: ADR-DSN/3]

\[Issue: ADR-DSN/5]

IR · CS ADR-DSN.B.165 — Regulation (EU) No 139/2014 · ED Decision 2021/004/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.