---
title: "ATM/ANS.OR.A.055 Findings and corrective actions — Part-ATM/ANS.OR · Avioverse"
description: "After receipt of notification of findings from the competent authority, the service provider shall:"
url: "https://avioverse.aero/regulations/easa/atm-ans/annex-iii-common-requirements-for-service/subpart-a/atm-ans-or-a-055"
---

# ATM/ANS.OR.A.055 Findings and corrective actions

ANNEX III COMMON REQUIREMENTS FOR SERVICE PROVIDERS (Part-ATM/ANS.OR) · Regulation (EU) 2017/373 · EAR revision 12 Mar 2025

IR Implementing rule

## ATM/ANS.OR.A.055 Findings and corrective actions

After receipt of notification of findings from the competent authority, the service provider shall:

(a) identify the root cause of the non-compliance;

(b) define a corrective action plan that meets the approval by the competent authority;

(c) demonstrate corrective action implementation to the satisfaction of the competent authority within the time period proposed by the service provider and agreed with that authority, as defined in point ATM/ANS.AR.C.050(e).

IR · ATM/ANS.OR.A.055 — Regulation (EU) 2017/373 · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025

GM Guidance material

## GM1 ATM/ANS.OR.A.055 Findings and corrective actions

GENERAL

(a) Corrective action is the action taken to eliminate or mitigate the root cause(s) and prevent the recurrence of existing detected non-compliance or other undesirable condition or situation.

(b) The proper determination of the root cause is crucial for defining effective corrective actions.

GM · GM1 ATM/ANS.OR.A.055 — Regulation (EU) 2017/373 · ED Decision 2017/001/R · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025

AMC Acceptable means of compliance

## AMC1 ATM/ANS.OR.A.055(b) Findings and corrective actions

GENERAL

The corrective action plan defined by the service provider should address the effects of the non-conformity and its root cause.

AMC · AMC1 ATM/ANS.OR.A.055(b) — Regulation (EU) 2017/373 · ED Decision 2017/001/R · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025

AMC Acceptable means of compliance

## AMC1 ATM/ANS.OR.A.055(c) Findings and corrective actions

CORRECTIVE ACTION IMPLEMENTATION PERIOD — DAT PROVIDERS

In case of a Level 1 finding, the DAT provider should demonstrate corrective action to the satisfaction of the competent authority within a period of no more than 21 working days following receipt of written confirmation of the finding. At the end of this period and subject to the nature of the finding, the 21-working-day period may be extended and agreed by the competent authority when the safety issue is mitigated.

AMC · AMC1 ATM/ANS.OR.A.055(c) — Regulation (EU) 2017/373 · ED Decision 2017/001/R · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025

[All rules in SUBPART A — GENERAL REQUIREMENTS (ATM/ANS.OR.A)](https://avioverse.aero/regulations/easa/atm-ans/annex-iii-common-requirements-for-service/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.