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Aeronautical Message Handling System
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<p>Aeronautical Message Handling System (AMHS) or Air Traffic Services Message Handling System (ATSMHS) is a standard for aeronautical ground-ground communications (e.g. for the transmission of <a href="/facts/NOTAM/A3v5R4ml">NOTAM</a>, <a href="/facts/Flight_plan/bdCLn96H">flight plans</a> or <a href="/facts/Aviation_meteorology/xblFr28q">meteorological data</a>) based on <a href="/facts/X.400/0WlH9AVf">X.400</a> profiles. It has been defined by the <a href="/facts/International_Civil_Aviation_Organization/TzrL1mLr">ICAO</a>. </p><p><a href="/facts/IWXXM/v8WnpbIq">IWXXM</a> requires the use of AMHS for international exchange. </p>