---
title: "ATS.TR.425 Information to aircraft operating in the vicinity of an aircraft in a state of emergency — SPECIFIC REQUIREMENTS FOR PROVIDERS OF AIR TRAFFIC SERVICES, ATM/ANS · Avioverse"
description: "When it has been established by an air traffic services unit that an aircraft is in a state of emergency, other aircraft known to be in the vicinity of…"
url: "https://avioverse.aero/regulations/easa/atm-ans/part-ats/subpart-b/ats-tr-425"
---

# ATS.TR.425 Information to aircraft operating in the vicinity of an aircraft in a state of emergency

SPECIFIC REQUIREMENTS FOR PROVIDERS OF AIR TRAFFIC SERVICES · Regulation (EU) 2017/373 · EAR revision 12 Mar 2025

IR Implementing rule

## ATS.TR.425 Information to aircraft operating in the vicinity of an aircraft in a state of emergency

(a) When it has been established by an air traffic services unit that an aircraft is in a state of emergency, other aircraft known to be in the vicinity of the aircraft involved shall, except as provided in point (b), be informed of the nature of the emergency as soon as practicable.

(b) When an air traffic services unit knows or believes that an aircraft is being subjected to unlawful interference, no reference shall be made in air traffic services air-ground communications to the nature of the emergency unless it has first been referred to in communications from the aircraft involved and it is certain that such reference will not aggravate the situation.

IR · ATS.TR.425 — Regulation (EU) 2017/373 · Commission Implementing Regulation (EU) 2020/469 · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025

[All rules in SUBPART B — TECHNICAL REQUIREMENTS FOR PROVIDERS OF AIR TRAFFIC SERVICES (ATS.TR)](https://avioverse.aero/regulations/easa/atm-ans/part-ats/subpart-b)

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.