Notice to Air Missions (NOTAMs)
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A NOTAM is a notice containing information essential to personnel concerned with flight operations but not known far enough in advance to be publicized by other means. It states the abnormal status of a component of the National Airspace System (NAS) – not the normal status.
NOTAMs indicate the real-time and abnormal status of the NAS impacting every user.
NOTAMs concern the establishment, condition, or change of any facility, service, procedure or hazard in the NAS.
NOTAMs have a unique language using special contractions to make communication more efficient.