---
title: "ATCO.C.065 Temporary assessor authorisation — ANNEX I – PART ATCO – REQUIREMENTS FOR THE LICENSING OF AIR TRAFFIC CONTROLLERS, ATCO · Avioverse"
description: "When the requirement provided for in ATCO.C.045(d)(1) cannot be met, the competent authority may authorise holders of an assessor endorsement issued in…"
url: "https://avioverse.aero/regulations/easa/atco/part-atco-requirements-for-the-licensing-of-air/subpart-c/atco-c-065"
---

# ATCO.C.065 Temporary assessor authorisation

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.065 Temporary assessor authorisation

(a) When the requirement provided for in ATCO.C.045(d)(1) cannot be met, the competent authority may authorise holders of an [assessor endorsement](https://avioverse.aero/glossary/easa/assessor-endorsement) issued in accordance with ATCO.C.055 to carry out assessments referred to in ATCO.C.045(b)(3) and (4) to cover exceptional situations or to ensure the independence of the [assessment](https://avioverse.aero/glossary/easa/assessment), provided that the requirements set out in points (b) and (c) are met.

(b) For the purpose of covering exceptional situations the holder of the assessor endorsement shall also hold a [unit endorsement](https://avioverse.aero/glossary/easa/unit-endorsement) with the associated [rating](https://avioverse.aero/glossary/easa/rating) and, if applicable, [rating endorsement](https://avioverse.aero/glossary/easa/rating-endorsement), relevant to the assessment for an immediately preceding period of at least one year. The authorisation shall be limited to the assessments necessary to cover exceptional situations and shall not exceed one year or the validity of the assessor endorsement issued in accordance with ATCO.C.055, whichever occurs sooner.

(c) For the purpose of ensuring the independence of the assessment for reasons of recurrent nature the holder of the assessor endorsement shall also hold a unit endorsement with the associated rating and, if applicable, rating endorsement, relevant to the assessment for an immediately preceding period of at least one year. The validity of the authorisation shall be determined by the competent authority but shall not exceed the validity of the assessor endorsement issued in accordance with ATCO.C.055.

(d) For issuing a temporary assessor authorisation for the reasons referred to in points (b) and (c) the competent authority may require a safety analysis to be presented by the air navigation service provider.

IR · ATCO.C.065 — Regulation (EU) 2015/340 · ATCO Easy Access Rules · EAR revision 14 Jun 2024

GM Guidance material

## GM1 ATCO.C.065(b) Temporary assessor authorisation

EXCEPTIONAL SITUATIONS

Exceptional situations for which it may be considered not to be possible to comply with ATCO.C.045(d)(1) for the purpose of the [unit endorsement](https://avioverse.aero/glossary/easa/unit-endorsement) experience, and, therefore, a temporary assessor authorisation may be granted, are the following:

(a) establishment of a new ATC unit or new [sector](https://avioverse.aero/glossary/easa/sector) for the air navigation service provider;

(b) the continuity of the existing service is endangered due to the non-availability of personnel as a consequence of a change in the air navigation service provider at the ATC unit;

(c) new [rating](https://avioverse.aero/glossary/easa/rating) or [rating endorsement](https://avioverse.aero/glossary/easa/rating-endorsement) put into operation at an ATC unit;

(d) reopening of a temporary ATC unit.

GM · GM1 ATCO.C.065(b) — Regulation (EU) 2015/340 · ED Decision 2015/010/R · ATCO Easy Access Rules · EAR revision 14 Jun 2024

GM Guidance material

## GM1 ATCO.C.065(c) Temporary assessor authorisation

INDEPENDENCE OF THE [ASSESSMENT](https://avioverse.aero/glossary/easa/assessment)

In the case of units not having sufficient number of assessors or if the independence and objectivity of the assessment from the training process is otherwise endangered, a temporary assessor authorisation may be granted.

GM · GM1 ATCO.C.065(c) — Regulation (EU) 2015/340 · ED Decision 2015/010/R · ATCO Easy Access Rules · EAR revision 14 Jun 2024

AMC Acceptable means of compliance

## AMC1 ATCO.C.065(d) Temporary assessor authorisation

SAFETY ANALYSIS

The safety analysis should specify the reasons for which the relevant [unit endorsement](https://avioverse.aero/glossary/easa/unit-endorsement) requirement provided for in ATCO.C.045(d)(1) cannot be met and how the equivalent level of safety will be ensured by other means.

For the purpose of ensuring the independence of the [assessment](https://avioverse.aero/glossary/easa/assessment) for reasons of recurrent nature, the safety analysis performed could encompass the recurrent nature of the need to ensure the independence of the assessments from the training process and provide a basis for the issue of multiple temporary authorisations based on the same reason.

AMC · AMC1 ATCO.C.065(d) — Regulation (EU) 2015/340 · ED Decision 2015/010/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.