---
title: "GM1 to Appendix 5 (2 — Section 1) DETAILED REPORTING INSTRUCTIONS — ANNEX: Rules of the Air, SERA — Appendix 5 Technical specifications related to aircraft observations and reports by voice communications — extract 2 · Avioverse"
description: "FLIGHT LEVEL OR ALTITUDE Example: ‘FLIGHT LEVEL 310’"
url: "https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/appendix-5/gm1-to-appendix-5-2-section-1-detailed-reporting-instructions-2"
---

# GM1 to Appendix 5 (2 — Section 1) DETAILED REPORTING INSTRUCTIONS

ANNEX: Rules of the Air · Regulation (EU) No 923/2012 · EAR revision 26 Aug 2025

GM Guidance material

## GM1 to Appendix 5 (2 — Section 1) DETAILED REPORTING INSTRUCTIONS

FLIGHT [LEVEL](https://avioverse.aero/glossary/easa/level) OR [ALTITUDE](https://avioverse.aero/glossary/easa/altitude)

Example:

‘FLIGHT LEVEL 310’

GM — Regulation (EU) No 923/2012 · ED Decision 2016/023/R · SERA Easy Access Rules · EAR revision 26 Aug 2025

[All rules in Appendix 5 Technical specifications related to aircraft observations and reports by voice communications](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/appendix-5)

Consolidated from the EASA Easy Access Rules (revision 26 Aug 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.