---
title: "GM1 to AMC1 ATS.TR.305(a);(b) Scope of flight information service — SPECIFIC REQUIREMENTS FOR PROVIDERS OF AIR TRAFFIC SERVICES, ATM/ANS · Avioverse"
description: "INFORMATION FOR DEPARTING AIRCRAFT — METEOROLOGICAL CONDITIONS Significant changes in this context include those relating to surface wind direction or…"
url: "https://avioverse.aero/regulations/easa/atm-ans/part-ats/subpart-b/gm1-to-amc1-ats-tr-305-a-b-scope-of-flight-information-service"
---

# GM1 to AMC1 ATS.TR.305(a);(b) Scope of flight information service

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

GM Guidance material

## GM1 to AMC1 ATS.TR.305(a);(b) Scope of flight information service

INFORMATION FOR DEPARTING AIRCRAFT — METEOROLOGICAL CONDITIONS

Significant changes in this context include those relating to surface wind direction or speed, visibility, RVR or air temperature (for turbine-engined aircraft), and the occurrence of thunderstorm or cumulonimbus, moderate or severe turbulence, wind shear, hail, moderate or severe icing, severe squall line, freezing precipitation, severe mountain waves, sandstorm, dust storm, blowing snow, tornado or waterspout.

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

[All rules in SUBPART B — TECHNICAL REQUIREMENTS FOR PROVIDERS OF AIR TRAFFIC SERVICES (ATS.TR)](https://avioverse.aero/regulations/easa/atm-ans/part-ats/subpart-b)

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.