---
title: "List of abbreviations — Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7, Aerodromes · Avioverse"
description: "(used in CS-ADR-DSN) AGL Above ground level AGL Aeronautical ground light AIP Aeronautical information publication AIS Aeronautical information services…"
url: "https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/powers-and-recitals/list-of-abbreviations"
---

# List of abbreviations

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

## List of abbreviations

(used in CS-ADR-DSN)

| AGL     | Above ground level                                                                                     |
| ------- | ------------------------------------------------------------------------------------------------------ |
| AGL     | [Aeronautical ground light](https://avioverse.aero/glossary/easa/aeronautical-ground-light)            |
| AIP     | Aeronautical information publication                                                                   |
| AIS     | Aeronautical information services                                                                      |
| APAPI   | Abbreviated precision approach path indicator                                                          |
| ARC     | [Aerodrome](https://avioverse.aero/glossary/easa/aerodrome) reference code                             |
| ARIWS   | Autonomous [runway](https://avioverse.aero/glossary/easa/runway) incursion warning systems             |
| ASDA    | Accelerate-stop distance available                                                                     |
| A-SMGCS | Advanced surface [movement](https://avioverse.aero/glossary/easa/movement) guidance and control system |
| ATC     | Air traffic control                                                                                    |
| ATIS    | Automatic terminal information service                                                                 |
| ATM     | Air traffic management                                                                                 |
| ATS     | [Air traffic services](https://avioverse.aero/glossary/easa/air-traffic-services)                      |
| A-VDGS  | Advanced visual docking guidance system                                                                |
| CBR     | California bearing ratio                                                                               |
| CCR     | Constant current regulators                                                                            |
| CIE     | International Commission on Illumination (Commission Internationale de l’Éclairage)                    |
| CWY     | [Clearway](https://avioverse.aero/glossary/easa/clearway)                                              |
| DH      | Decision height                                                                                        |
| DME     | Distance measuring equipment                                                                           |
| EMAS    | Engineered Materials [Arresting System](https://avioverse.aero/glossary/easa/arresting-system)         |
| ESDU    | Engineering sciences data unit                                                                         |
| FOD     | Foreign object debris                                                                                  |
| FOV     | Field of view                                                                                          |
| Hes     | Height of equivalent elevated [sign](https://avioverse.aero/glossary/easa/sign) character              |
| Hps     | Height of pavement sign character                                                                      |
| ICAO    | International Civil Aviation Organization                                                              |
| ILS     | Instrument landing system                                                                              |
| IMC     | Instrument meteorological conditions                                                                   |
| ISO     | International Organisation for Standardisation                                                         |
| LDA     | [Landing distance available](https://avioverse.aero/glossary/easa/landing-distance-available)          |
| LED     | Light-emitting diodes                                                                                  |
| LRST    | Local runway safety team                                                                               |
| MLS     | Microwave landing system                                                                               |
| MLW     | Maximum landing weight                                                                                 |
| MPD     | Mean profile depth                                                                                     |
| MTD     | Mean texture depth                                                                                     |
| MTOW    | Maximum take-off weight                                                                                |
| NOTAM   | Notice to airman                                                                                       |
| NU      | Not usable                                                                                             |
| OCA/H   | [Obstacle](https://avioverse.aero/glossary/easa/obstacle) clearance altitude/ height                   |
| OFZ     | Obstacle-free zone                                                                                     |
| OLS     | [Obstacle limitation surface](https://avioverse.aero/glossary/easa/obstacle-limitation-surface)        |
| OMGWS   | Outer main gear wheel span                                                                             |
| OPS     | [Obstacle protection surface](https://avioverse.aero/glossary/easa/obstacle-protection-surface)        |
| PAPI    | Precision approach path indicator                                                                      |
| PBN     | Performance based navigation                                                                           |
| PSV     | Polished stone values                                                                                  |
| RELs    | Runway entrance lights                                                                                 |
| RESA    | Runway end [safety area](https://avioverse.aero/glossary/easa/safety-area)                             |
| RET     | [Rapid exit taxiway](https://avioverse.aero/glossary/easa/rapid-exit-taxiway)                          |
| RETILs  | Rapid exit taxiway indicator lights                                                                    |
| RFF     | Rescue and firefighting                                                                                |
| RFFS    | Rescue and firefighting services                                                                       |
| RP      | Reference point                                                                                        |
| RVR     | Runway visual range                                                                                    |
| RWSL    | Runway status lights                                                                                   |
| RWY     | Runway                                                                                                 |
| SMGCS   | Surface movement guidance and control system                                                           |
| SWY     | [Stopway](https://avioverse.aero/glossary/easa/stopway)                                                |
| TDZ     | Runway [touchdown zone](https://avioverse.aero/glossary/easa/touchdown-zone)                           |
| THLs    | Take-off hold lights                                                                                   |
| TODA    | Take-off distance available                                                                            |
| TORA    | Take-off run available                                                                                 |
| UPS     | Uninterruptible power supply                                                                           |
| VMC     | Visual meteorological conditions                                                                       |
| VOR     | VHF Omnidirectional radio range                                                                        |
| WGS-84  | World geodetic system – 1984                                                                           |

IR — Regulation (EU) No 139/2014 · ED Decision 2022/006/R · Aerodromes Easy Access Rules · EAR revision 13 Mar 2026

[All rules in Powers and recitals](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/powers-and-recitals)

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.