---
title: "ATCO.C.060 Validity of assessor endorsement — ANNEX I – PART ATCO – REQUIREMENTS FOR THE LICENSING OF AIR TRAFFIC CONTROLLERS, ATCO · Avioverse"
description: "The assessor endorsement shall be valid for a period of three years."
url: "https://avioverse.aero/regulations/easa/atco/part-atco-requirements-for-the-licensing-of-air/subpart-c/atco-c-060"
---

# ATCO.C.060 Validity of assessor endorsement

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.C.060 Validity of assessor endorsement

(a) The [assessor endorsement](https://avioverse.aero/glossary/easa/assessor-endorsement) shall be valid for a period of three years.

(b) The assessor endorsement may be revalidated by successfully completing refresher training on [assessment](https://avioverse.aero/glossary/easa/assessment) skills and on current operational practices during its validity period.

(c) If the assessor endorsement has expired, it may be renewed by:

(1) receiving refresher training on assessment skills and on current operational practices; and

(2) successfully passing an assessor competence assessment;

within the year preceding the application for [renewal](https://avioverse.aero/glossary/easa/renewal).

(d) In the case of first issue and renewal the period of validity of the assessor endorsement shall start not later than 30 days from the date on which the assessment has been successfully completed.

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

(a) The assessor endorsement shall be valid for a period of 3 years.

(b) The assessor endorsement may be revalidated by successfully completing refresher training on assessment skills and on current operational practices during its validity period.

(c) If the assessor endorsement has expired, it may be renewed if, within the 12 months preceding the application for renewal, the assessor endorsement holder has:

(1) received refresher training on assessment skills and on current operational practices; and

(2) successfully passed an assessor competence assessment.

(d) In the case of first issue and renewal, the period of validity of the assessor endorsement shall start not later than 30 days from the date on which the assessment has been successfully completed.

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

IR · ATCO.C.060 — Regulation (EU) 2015/340 · Regulation (EU) 2023/893 · ATCO Easy Access Rules · EAR revision 14 Jun 2024

GM Guidance material

## GM1 ATCO.C.060(b) Validity of assessor endorsement

[REVALIDATION](https://avioverse.aero/glossary/easa/revalidation)

(a) Successful completion of the refresher training in [assessment](https://avioverse.aero/glossary/easa/assessment) skills and current operational practices may be verified by several means, for example by:

(1) dedicated or continuous assessment;

(2) peer assessment; or

(3) demonstration of the practical instructional skills.

\[applicable until 3 August 2024 - ED Decision 2015/010/R]

(a) The successful completion of the refresher training in assessment skills and current operational practices may be verified by several means; for example, by:

(1) dedicated or continuous assessment;

(2) peer assessment; or

(3) demonstration of the assessment skills.

\[applicable from 4 August 2024 - ED Decision 2023/011/R]

(b) Current operational practices may be refreshed by transitional and pre-on-the-job training.

(c) The verification should be undertaken following the completion of the refresher training.

GM · GM1 ATCO.C.060(b) — Regulation (EU) 2015/340 · ED Decision 2023/011/R · ATCO Easy Access Rules · EAR revision 14 Jun 2024

[All rules in SUBPART C – REQUIREMENTS FOR INSTRUCTORS AND ASSESSORS](https://avioverse.aero/regulations/easa/atco/part-atco-requirements-for-the-licensing-of-air/subpart-c)

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.