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NOTICE TO AIRMEN (NOTAM)

Airspace

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NOTAM

A notice containing information (not known sufficiently in advance to publicize by other means) concerning the establishment, condition, or change in any component (facility, service, or procedure of, or hazard in the National Airspace System) the timely knowledge of which is essential to personnel concerned with flight operations.

  1. NOTAM (D) – a NOTAM given distant dissemination beyond the area of responsibility of the Flight Service Station.
  2. FDC NOTAM – a NOTAM regulatory in nature, transmitted by USNOF and given system wide dissemination.

Source FAA Pilot/Controller Glossary · checked 2026-08-25

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