---
title: "ATCO.D.085 Conversion training — ANNEX I – PART ATCO – REQUIREMENTS FOR THE LICENSING OF AIR TRAFFIC CONTROLLERS, ATCO · Avioverse"
description: "Conversion training course(s) shall be developed and provided by training organisations and approved by the competent authority."
url: "https://avioverse.aero/regulations/easa/atco/part-atco-requirements-for-the-licensing-of-air/subpart-d/atco-d-085"
---

# ATCO.D.085 Conversion training

ANNEX I – PART ATCO – REQUIREMENTS FOR THE LICENSING OF AIR TRAFFIC CONTROLLERS · Regulation (EU) 2015/340 · EAR revision 14 Jun 2024

IR Implementing rule

## ATCO.D.085 Conversion training

(a) Conversion [training course](https://avioverse.aero/glossary/easa/training-course)(s) shall be developed and provided by training organisations and approved by the competent authority.

(b) Conversion training shall be designed to provide knowledge and skills appropriate to a change in the operational environment and shall be provided by training organisations when the safety [assessment](https://avioverse.aero/glossary/easa/assessment) of the change concludes the need for such training.

(c) Conversion training courses shall include the determination of:

(1) the appropriate training method for and duration of the course, taking into account the nature and extent of the change; and

(2) the [examination](https://avioverse.aero/glossary/easa/examination) and/or assessment methods for the conversion training.

(d) Conversion training shall be provided before air traffic controllers exercise the privileges of their [licence](https://avioverse.aero/glossary/easa/licence) in the changed operational environment.

IR · ATCO.D.085 — Regulation (EU) 2015/340 · ATCO Easy Access Rules · EAR revision 14 Jun 2024

GM Guidance material

## GM1 ATCO.D.085 Conversion training

CONVERSION TRAINING FOR AIR TRAFFIC CONTROLLERS PROVIDING REMOTE AERODROME AIR TRAFFIC SERVICES In case of a transition from a ‘conventional tower’ (defined in the EASA ‘Guidance Material on remote aerodrome air traffic services’ — Issue 2) to a ‘remote tower’ (defined in the EASA ‘Guidance Material on remote aerodrome air traffic services’ — Issue 2), the conversion training for air traffic controllers should at least include the items listed in GM3 ATCO.D.060(c), and if applicable the items listed in GM4 ATCO.D.060(c).

In case of a transition from a ‘remote tower’ to a ‘conventional tower’, the [training organisation](https://avioverse.aero/glossary/easa/training-organisation) should consider possible training needs, if appropriate, required by the change of operational environment.

In case of a transition from ‘single mode of operation’ (defined in the EASA ‘Guidance Material on remote aerodrome air traffic services’ — Issue 2) to ‘multiple mode of operation’ (defined in the EASA ‘Guidance Material on remote aerodrome air traffic services’ — Issue 2), the conversion training for air traffic controllers should at least include the items listed in GM4 ATCO.D.060(c).

GM · GM1 ATCO.D.085 — Regulation (EU) 2015/340 · ED Decision 2019/004/R · ATCO Easy Access Rules · EAR revision 14 Jun 2024

[All rules in SUBPART D – AIR TRAFFIC CONTROLLER TRAINING](https://avioverse.aero/regulations/easa/atco/part-atco-requirements-for-the-licensing-of-air/subpart-d)

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.