---
title: "SERA.15020 Responding to CPDLC messages — ANNEX: Rules of the Air, SERA · Avioverse"
description: "Unless otherwise specified by the competent authority, voice read-back of CPDLC messages shall not be required."
url: "https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-15/sera-15020"
---

# SERA.15020 Responding to CPDLC messages

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

IR Implementing rule

## SERA.15020 Responding to CPDLC messages

(a) Unless otherwise specified by the [competent authority](https://avioverse.aero/glossary/easa/competent-authority), voice read-back of CPDLC messages shall not be required.

(b) Except when correction of the CPDLC message transmitted is needed, when a controller or a pilot communicates via CPDLC, the response shall normally be via CPDLC. When a controller or a pilot communicates via voice, the response shall normally be via voice.

IR · SERA.15020 — Regulation (EU) No 923/2012 · Regulation (EU) 2023/1772 · SERA Easy Access Rules · EAR revision 26 Aug 2025

[All rules in SECTION 15 Controller-pilot data link communication (CPDLC) procedures](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-15)

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.