---
title: "MET.OR.265 Volcanic ash advisory centre responsibilities — SPECIFIC REQUIREMENTS FOR PROVIDERS OF METEOROLOGICAL SERVICES, ATM/ANS · Avioverse"
description: "In its area of responsibility, the VAAC shall: when a volcano has erupted, or is expected to erupt, or volcanic ash is reported, issue advisory…"
url: "https://avioverse.aero/regulations/easa/atm-ans/part-met/subpart-a/met-or-265"
---

# MET.OR.265 Volcanic ash advisory centre responsibilities

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

Official sources: [EASA Easy Access Rules (opens in a new tab)](https://www.easa.europa.eu/en/document-library/easy-access-rules/easy-access-rules-air-traffic-managementair-navigation-services-provision-services) · [EUR-Lex 2017/373 (opens in a new tab)](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32017R0373)

IR Implementing rule

## MET.OR.265 Volcanic ash advisory centre responsibilities

In its area of responsibility, the VAAC shall:

(a) when a volcano has erupted, or is expected to erupt, or volcanic ash is reported, issue advisory information regarding the extent and forecast movement of the volcanic ash cloud;

(b) coordinate with selected volcano observatories to ensure that information on volcanic activity is received in an efficient and timely manner;

(c) provide the advisory meteorological information referred to in point (a) at least every 6 hours until such time as the volcanic ash cloud is no longer identifiable from satellite data, no further meteorological reports of volcanic ash are received from the area and no further eruptions of the volcano are reported; and

(d) maintain a 24-hour watch.

IR · MET.OR.265 — Regulation (EU) 2017/373 · Regulation (EU) 2021/1338 · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025

AMC Acceptable means of compliance

## AMC1 MET.OR.265(a) Volcanic ash advisory centre responsibilities

DISSEMINATION OF VOLCANIC ASH ADVISORY

Volcanic ash advisory information should be disseminated to:

(a) the European aviation crisis coordination cell;

(b) international OPMET databanks and to centres responsible for the operation of aeronautical fixed service Internet-based services.

AMC · AMC1 MET.OR.265(a) — Regulation (EU) 2017/373 · ED Decision 2022/004/R · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025

GM Guidance material

## GM1 MET.OR.265(a) Volcanic ash advisory centres (VAACs) responsibilities

DISTRIBUTION OF METEOROLOGICAL DATA

The AFS address to be used by the VAACs is given in ICAO Doc 9766 ‘Handbook on the International Airways Volcano Watch (IAVW)'.

GM · GM1 MET.OR.265(a) — Regulation (EU) 2017/373 · ED Decision 2020/008/R · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025

GM Guidance material

## GM2 MET.OR.265(a) Volcanic ash advisory centre responsibilities

DISSEMINATION OF VOLCANIC ASH ADVISORY

Procedures for the dissemination of volcanic ash advisory information to users are described in ICAO EUR Doc 018 ‘EUR OPMET DATA MANAGEMENT HANDBOOK’.

GM · GM2 MET.OR.265(a) — Regulation (EU) 2017/373 · ED Decision 2022/004/R · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025

[All rules in SUBPART A — ADDITIONAL ORGANISATION REQUIREMENTS FOR PROVIDERS OF METEOROLOGICAL SERVICES (MET.OR)](https://avioverse.aero/regulations/easa/atm-ans/part-met/subpart-a)

Consolidated from the EASA Easy Access Rules (revision 12 Mar 2025, extracted 2 Nov 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.