---
title: "CS ADR-DSN.A.005 Aerodrome reference code (ARC) — Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7, Aerodromes · Avioverse"
description: "An aerodrome reference code, consisting of a code number and letter which is selected for aerodrome planning purposes, should be determined in accordance…"
url: "https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-a-general/cs-adr-dsn-a-005"
---

# CS ADR-DSN.A.005 Aerodrome reference code (ARC)

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.A.005 Aerodrome reference code (ARC)

(a) An [aerodrome](https://avioverse.aero/glossary/easa/aerodrome) reference code, consisting of a code number and letter which is selected for aerodrome planning purposes, should be determined in accordance with the characteristics of the [aeroplane](https://avioverse.aero/glossary/easa/aeroplane) for which an aerodrome facility is intended.

(b) The aerodrome reference code numbers and letters should have the meanings assigned to them in Table A-1.

(c) The code number for element 1 should be determined from Table A-1, by selecting the code number corresponding to the highest value of the aeroplane reference field lengths of the aeroplanes for which the [runway](https://avioverse.aero/glossary/easa/runway) is intended. The determination of the [aeroplane reference field length](https://avioverse.aero/glossary/easa/aeroplane-reference-field-length) is solely for the selection of a code number and is not intended to influence the actual runway length provided.

(d) The code letter for element 2 should be determined from Table A-1, by selecting the code letter which corresponds to the greatest wingspan of the aeroplanes for which the facility is intended.

| Code element 1 |                                         |
| -------------- | --------------------------------------- |
| Code number    | Aeroplane reference field length        |
| 1              | Less than 800 m                         |
| 2              | 800 m up to but not including 1 200 m   |
| 3              | 1 200 m up to but not including 1 800 m |
| 4              | 1 800 m and over                        |

| Code element 2 |                                   |
| -------------- | --------------------------------- |
| Code letter    | Wingspan                          |
| A              | Up to but not including 15 m      |
| B              | 15 m up to but not including 24 m |
| C              | 24 m up to but not including 36 m |
| D              | 36 m up to but not including 52 m |
| E              | 52 m up to but not including 65 m |
| F              | 65 m up to but not including 80 m |

Table A-1 Aerodrome reference code

\[Issue: ADR-DSN/3]

\[Issue: ADR-DSN/4]

IR · CS ADR-DSN.A.005 — Regulation (EU) No 139/2014 · ED Decision 2017/021/R · Aerodromes Easy Access Rules · EAR revision 13 Mar 2026

[All rules in CHAPTER A — GENERAL](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-a-general)

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.