---
title: "DTO.GEN.155 Reaction to a safety problem — Part-DTO · Avioverse"
description: "As a reaction to a safety problem, a DTO shall implement: the safety measures mandated by the competent authority in accordance with point ARA.GEN.135(c);"
url: "https://avioverse.aero/regulations/easa/aircrew/part-dto/annex-iii/dto-gen-155"
---

# DTO.GEN.155 Reaction to a safety problem

ANNEX VIII (Part-DTO) · Regulation (EU) No 1178/2011 · EAR revision 25 Nov 2025

IR Implementing rule

## DTO.GEN.155 Reaction to a safety problem

As a reaction to a safety problem, a DTO shall implement:

(a) the safety measures mandated by the competent authority in accordance with point ARA.GEN.135(c);

(b) the relevant mandatory safety information issued by the Agency, including airworthiness directives.

IR · DTO.GEN.155 — Regulation (EU) No 1178/2011 · Regulation (EU) 2018/1119 · Aircrew Easy Access Rules · EAR revision 25 Nov 2025

[All rules in ANNEX III](https://avioverse.aero/regulations/easa/aircrew/part-dto/annex-iii)

Consolidated from the EASA Easy Access Rules (revision 25 Nov 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.