KNOWN TRAFFIC
With respect to ATC clearances, means aircraft whose altitude, position, and intentions are known to ATC.
Pilot/Controller Glossary: K
1 entries, reproduced verbatim from the FAA glossary effective 7/9/26.
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Source. FAA Pilot/Controller Glossary, letter K, effective 7/9/26, reproduced verbatim from https://www.faa.gov/Air_traffic/publications/atpubs/pcg_html/index.html. A United States Government work. Check the current published glossary before you rely on any entry here.