---
title: "GM1 203. Instrument approach operations — ANNEX I — Part-DEFINITIONS, ATM/ANS · Avioverse"
description: "NAVIGATION GUIDANCE Lateral and vertical navigation guidance refers to the guidance provided either by:"
url: "https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general/gm1-203-instrument-approach-operations"
---

# GM1 203. Instrument approach operations

ANNEX I — Part-DEFINITIONS · Regulation (EU) 2017/373 · EAR revision 12 Mar 2025

GM Guidance material

## GM1 203. Instrument approach operations

NAVIGATION GUIDANCE

Lateral and vertical navigation guidance refers to the guidance provided either by:

(a) ground-based radio navigation aid; or

(b) computer-generated navigation data from ground-based, space-based, self-contained navigation aids or a combination of them.

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

[All rules in General provisions](https://avioverse.aero/regulations/easa/atm-ans/part-definitions/general)

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.