---
title: "SERA.14005 Categories of messages — ANNEX: Rules of the Air, SERA · Avioverse"
description: "The categories of messages handled by the aeronautical mobile service, and the order of priority in the establishment of communications and the…"
url: "https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-14/sera-14005"
---

# SERA.14005 Categories of messages

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

IR Implementing rule

## SERA.14005 Categories of messages

(a) The categories of messages handled by the [aeronautical mobile service](https://avioverse.aero/glossary/easa/aeronautical-mobile-service), and the order of priority in the establishment of communications and the transmission of messages shall be in accordance with Table S14-1.

| Table S14-1                                                                                                         |                            |
| ------------------------------------------------------------------------------------------------------------------- | -------------------------- |
| Message category and [radiotelephony](https://avioverse.aero/glossary/easa/radiotelephony) order of priority signal | Radiotelephony signal      |
| (a) Distress calls, distress messages and distress traffic                                                          | MAYDAY                     |
| (b) Urgency messages, including messages preceded by the medical transports signal                                  | PAN PAN or PAN PAN MEDICAL |
| (c) Communications relating to direction finding                                                                    | —                          |
| (d) Flight safety messages                                                                                          | —                          |
| (e) Meteorological messages                                                                                         | —                          |
| (f) Flight regularity messages                                                                                      | —                          |

(b) Distress messages and distress traffic shall be handled in accordance with the provisions of point SERA.14095.

(c) Urgency messages and urgency traffic, including messages preceded by the medical transports signal, shall be handled in accordance with the provisions of point SERA.14095.

IR · SERA.14005 — Regulation (EU) No 923/2012 · Regulation (EU) 2016/1185 · SERA Easy Access Rules · EAR revision 26 Aug 2025

[All rules in SECTION 14 Voice communication procedures](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-14)

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.