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A continuous VOLMET broadcast contains…

  • A

    recently received routine and special reports from aircraft within the FIR.

  • B

    an area forecast for flights in the FIR below 5000 ft AGL.

  • C

    recent METAR and SPECI reports from a published selection of aerodromes.

  • D

    the latest TAFs and METARs for major international aerodromes.

VOLMET

When an aircraft is in flight, the pilots are interested in meteorological conditions at specific airports, especially on international routes. Therefore, a system called VOLMET has been implemented which provides METAR and TAF reports but also TRENDs and SIGMETs of large airports worldwide. The frequencies used are VHF and HF, and VOLMET information can be received even at long distances to those airports.

ICAO Annex 3
11.6 Use of aeronautical broadcasting service — contents of VOLMET broadcasts

11.6.1 Continuous VOLMET broadcasts, normally on very high frequencies (VHF), shall contain current METAR and SPECI, together with trend forecasts where available.

11.6.2 Scheduled VOLMET broadcasts, normally on high frequencies (HF), shall contain current METAR and SPECI, together with trend forecasts where available and, where so determined by regional air navigation agreement, TAF and SIGMET.

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