---
title: "GM1 SECTION I — (b) CONTROL AREAS — SPECIFIC REQUIREMENTS FOR PROVIDERS OF FLIGHT PROCEDURE DESIGN SERVICES, ATM/ANS · Avioverse"
description: "GENERAL (a) When the lower limit of a control area is above 900 m (3 000 ft) mean sea level (MSL), it should coincide with a VFR cruising level as…"
url: "https://avioverse.aero/regulations/easa/atm-ans/specific-requirements-for-providers-of-flight/appendix-1/gm1-section-i-b-control-areas"
---

# GM1 SECTION I — (b) CONTROL AREAS

SPECIFIC REQUIREMENTS FOR PROVIDERS OF FLIGHT PROCEDURE DESIGN SERVICES · Regulation (EU) 2017/373 · EAR revision 12 Mar 2025

GM Guidance material

## GM1 SECTION I — (b) CONTROL AREAS

GENERAL

(a) When the lower limit of a control area is above 900 m (3 000 ft) mean sea level (MSL), it should coincide with a VFR cruising level as specified in the tables in Appendix 3 to Commission Implementing Regulation (EU) No 923/2012.

(b) In a given control area, the lower limit may be established non-uniformly.

(c) The selected VFR cruising level of the lower limit of a control area should be such that expected local atmospheric pressure variations do not result in a lowering of this limit to a height of less than 200 m (700 ft) above ground or water.

(d) In a control area other than one formed by a system of airways, a system of routes may be established to facilitate the provision of air traffic control.

GM — Regulation (EU) 2017/373 · ED Decision 2020/008/R · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025

[All rules in Appendix 1 — REQUIREMENTS FOR AIRSPACE STRUCTURES AND FLIGHT PROCEDURES CONTAINED THEREIN](https://avioverse.aero/regulations/easa/atm-ans/specific-requirements-for-providers-of-flight/appendix-1)

Consolidated from the EASA Easy Access Rules (revision 12 Mar 2025, 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.