This order prescribes direction used to format and distribute information regarding unanticipated or temporary changes to services, components of, or hazards in, the National Airspace System (NAS). The Notices to Airmen (NOTAM) system does not advertise published or charted data and information. Originators of airmen information are expected to inform the National Flight Data Center (NFDC) in sufficient time before the effective dates of changes to permit publishing of aeronautical data on the various charts or in the appropriate publications. When time does not allow for publication of a change or an outage and if the subject matter meets NOTAM criteria, issue a NOTAM until published.
