---
title: "CS ADR-DSN.B.015 Number, siting and orientation of runways — Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7, Aerodromes · Avioverse"
description: "The number and orientation of runways at an aerodrome should be such that the usability factor of the aerodrome is optimised taking into account that…"
url: "https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-b-runways/cs-adr-dsn-b-015"
---

# CS ADR-DSN.B.015 Number, siting and orientation of runways

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.015 Number, siting and orientation of runways

The number and orientation of runways at an [aerodrome](https://avioverse.aero/glossary/easa/aerodrome) should be such that the [usability factor](https://avioverse.aero/glossary/easa/usability-factor) of the aerodrome is optimised taking into account that safety is not compromised.

IR · CS ADR-DSN.B.015 — Regulation (EU) No 139/2014 · ED Decision 2014/013/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.