---
title: "GM1 -ADR-DSN.G.390 Slopes on de-icing/anti-icing pads — Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7, Aerodromes · Avioverse"
description: "It is recommended that the drainage arrangements for the collection and safe disposal of excess de-icing/anti-icing fluids prevent ground water…"
url: "https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-g-de-icing-anti-icing-facilities/gm1-adr-dsn-g-390-slopes-on-de-icing-anti-icing-pads"
---

# GM1 -ADR-DSN.G.390 Slopes on de-icing/anti-icing pads

Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7 · Regulation (EU) No 139/2014 · EAR revision 13 Mar 2026

GM Guidance material

## GM1 -ADR-DSN.G.390 Slopes on de-icing/anti-icing pads

It is recommended that the drainage arrangements for the collection and safe disposal of excess de-icing/anti-icing fluids prevent ground water contamination.

GM — Regulation (EU) No 139/2014 · ED Decision 2014/013/R · Aerodromes Easy Access Rules · EAR revision 13 Mar 2026

[All rules in CHAPTER G — DE-ICING/ANTI-ICING FACILITIES](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-g-de-icing-anti-icing-facilities)

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.