Air Traffic Flow Management The Air Traffic Flow Management (ATFM) Portal is a web-based interface that allows airspace users, airport operators and other ATFM users to access pertinent ATFM information such as the Calculated Take-Off Time (CTOT) during the implementation of ATFM measures. Users will also be able to view the most up-to-date demand and capacity information, thus enabling them to predict air traffic management issues more easily.
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