An advisory is a message that is disseminated electronically by the FAA Air Traffic Control System Command Center (ATCSCC). It contains information pertaining to the National Airspace System (NAS). Advisories are used to communicate a variety of items, including:
- Ground stops
- Ground delay programs
- Airspace flow programs
- Route information
- Planning telcon (PT) information
- Facility outages
- Volcanic activity bulletins
This list is not all-inclusive. Any time there is information that may be beneficial to a large number of customers, an advisory may be sent. There may be times when an advisory is not sent due to workload or due to the short duration of the activity.
Advisories are numbered sequentially from 001 beginning at 0000z each day.
US and Canadian advisories for the current day, as well as for the previous 14 days, can be accessed at the FAA’s Advisories Database.
A list of terms commonly used in advisories can be found in NBAA’s Glossary of Traffic Flow Management Terms. This glossary is not an all-inclusive aviation glossary. Rather, it is intended to define terms that regularly appear in FAA advisories and other web resources.