---
title: "AIS.OR.205 Formal arrangements — SPECIFIC REQUIREMENTS FOR THE PROVIDERS OF AERONAUTICAL INFORMATION SERVICES, ATM/ANS · Avioverse"
description: "An AIS provider shall ensure that formal arrangements are established with:"
url: "https://avioverse.aero/regulations/easa/atm-ans/specific-requirements-for-the-providers-of/subpart-a/ais-or-205"
---

# AIS.OR.205 Formal arrangements

SPECIFIC REQUIREMENTS FOR THE PROVIDERS OF AERONAUTICAL INFORMATION SERVICES · Regulation (EU) 2017/373 · EAR revision 12 Mar 2025

IR Implementing rule

## AIS.OR.205 Formal arrangements

An AIS provider shall ensure that formal arrangements are established with:

(a) all parties transmitting data to them; and

(b) other AIS providers, when exchanging aeronautical data and aeronautical information with them.

IR · AIS.OR.205 — Regulation (EU) 2017/373 · Commission Implementing Regulation (EU) 2020/469 · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025

AMC Acceptable means of compliance

## AMC1 AIS.OR.205 Formal arrangements

MINIMUM CONTENT

Formal arrangements should include the following minimum content:

(a) the aeronautical data to be provided;

(b) the data quality requirements (DQRs) for each data item supplied according to the aeronautical data catalogue;

(c) the method(s) for demonstrating that the data provided conforms with the specified requirements;

(d) the action to be taken in the event of discovery of a data error or inconsistency in any data provided;

(e) the following minimum criteria for notification of data changes:

(1) criteria for determining the timeliness of data provision based on the operational or safety significance of the change;

(2) any prior notice of expected changes; and

(3) the means to be adopted for notification;

(f) the party responsible for documenting data changes;

(g) data exchange details such as format or format change processes;

(h) any limitations on the use of data;

(i) requirements for the production of data origination quality reports;

(j) metadata requirements; and

(k) contingency requirements concerning the continuity of data provision.

AMC · AMC1 AIS.OR.205 — Regulation (EU) 2017/373 · ED Decision 2020/008/R · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025

[All rules in SUBPART A – ADDITIONAL ORGANISATION REQUIREMENTS FOR PROVIDERS OF AERONAUTICAL INFORMATION SERVICES (AIS.OR)](https://avioverse.aero/regulations/easa/atm-ans/specific-requirements-for-the-providers-of/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.