---
title: "CS ADR-DSN.B.045 Width of runways — Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7, Aerodromes · Avioverse"
description: "The width of a runway should be not less than the appropriate dimension specified in the Table B-1."
url: "https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-b-runways/cs-adr-dsn-b-045"
---

# CS ADR-DSN.B.045 Width 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.045 Width of runways

(a) The width of a [runway](https://avioverse.aero/glossary/easa/runway) should be not less than the appropriate dimension specified in the Table B-1.

| Code number                                                                                              | [Outer Main Gear Wheel Span (OMGWS)](https://avioverse.aero/glossary/easa/outer-main-gear-wheel-span) |                                   |                                 |                                  |
| -------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------- | --------------------------------- | ------------------------------- | -------------------------------- |
|                                                                                                          | Up to but not including 4.5 m                                                                         | 4.5 m up to but not including 6 m | 6 m up to but not including 9 m | 9 m up to but not including 15 m |
| 1a                                                                                                       | 18 m                                                                                                  | 18 m                              | 23 m                            | —                                |
| 2a                                                                                                       | 23 m                                                                                                  | 23 m                              | 30 m                            | —                                |
| 3                                                                                                        | 30 m                                                                                                  | 30 m                              | 30 m                            | 45 m                             |
| 4                                                                                                        | —                                                                                                     | —                                 | 45 m                            | 45 m                             |
| a The width of a precision approach runway should be not less than 30 m where the code number is 1 or 2. |                                                                                                       |                                   |                                 |                                  |

Table B-1. Width of runway

(b) The width of the runway should be measured at the outside edge of the runway side stripe [marking](https://avioverse.aero/glossary/easa/marking) where provided, or the edge of the runway.

\[Issue: ADR-DSN/4]

IR · CS ADR-DSN.B.045 — 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.