---
title: "ATSEP.OR.400 ATSEP training instructors — REQUIREMENTS FOR SERVICE PROVIDERS CONCERNING PERSONNEL TRAINING AND COMPETENCE ASSESSMENT, ATM/ANS · Avioverse"
description: "A service provider employing ATSEP shall ensure that: ATSEP training instructors are suitably experienced in the field where instruction is to be given;"
url: "https://avioverse.aero/regulations/easa/atm-ans/requirements-for-service-providers-concerning/subpart-a/atsep-or-400"
---

# ATSEP.OR.400 ATSEP training instructors

REQUIREMENTS FOR SERVICE PROVIDERS CONCERNING PERSONNEL TRAINING AND COMPETENCE ASSESSMENT · Regulation (EU) 2017/373 · EAR revision 12 Mar 2025

IR Implementing rule

## ATSEP.OR.400 ATSEP training instructors

A service provider employing ATSEP shall ensure that:

(a) ATSEP training instructors are suitably experienced in the field where instruction is to be given;

(b) on-the-job training instructors have successfully completed an on-the-job-training course and have the skills to intervene in instances where safety may be compromised during the training.

IR · ATSEP.OR.400 — Regulation (EU) 2017/373 · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025

[All rules in SUBPART A —AIR TRAFFIC SAFETY ELECTRONICS PERSONNEL](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-service-providers-concerning/subpart-a)

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.