---
title: "ATCO.OR.B.035 Immediate reaction to a safety problem — ANNEX III – PART ATCO.OR – REQUIREMENTS FOR AIR TRAFFIC CONTROLLER TRAINING ORGANISATIONS AND AERO-MEDICAL CENTRES, ATCO · Avioverse"
description: "The training organisation shall implement any safety measures mandated by the competent authority in accordance with ATCO.AR.C.001(a)(3) for the training…"
url: "https://avioverse.aero/regulations/easa/atco/part-atco-or-requirements-for-air-traffic/subpart-b/atco-or-b-035"
---

# ATCO.OR.B.035 Immediate reaction to a safety problem

ANNEX III – PART ATCO.OR – REQUIREMENTS FOR AIR TRAFFIC CONTROLLER TRAINING ORGANISATIONS AND AERO-MEDICAL CENTRES · Regulation (EU) 2015/340 · EAR revision 14 Jun 2024

IR Implementing rule

## ATCO.OR.B.035 Immediate reaction to a safety problem

The [training organisation](https://avioverse.aero/glossary/easa/training-organisation) shall implement any safety measures mandated by the competent authority in accordance with ATCO.AR.C.001(a)(3) for the training organisation activities.

\[applicable until 3 August 2024 - Regulation (EU) 2015/340]

The training organisation shall implement any safety measures mandated by the competent authority in accordance with point ATCO.AR.A.025(c) and (d) for the training organisation activities.

\[applicable from 4 August 2024 - Implementing Regulation (EU) 2023/893]

IR · ATCO.OR.B.035 — Regulation (EU) 2015/340 · Regulation (EU) 2023/893 · ATCO Easy Access Rules · EAR revision 14 Jun 2024

[All rules in SUBPART B – REQUIREMENTS FOR AIR TRAFFIC CONTROLLER TRAINING ORGANISATIONS](https://avioverse.aero/regulations/easa/atco/part-atco-or-requirements-for-air-traffic/subpart-b)

Consolidated from the EASA Easy Access Rules (revision 14 Jun 2024, 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.