📢 This glossary was originally created to be a dynamic version of the Pilot/Controller Glossary published by the FAA. Because the FAA now maintains its own dynamic version of the Pilot/Controller Glossary, this version is no longer updated.
| Term: |
FIRST TIER CENTER |
|---|---|
| Meaning: | An ARTCC immediately adjacent to the impacted center. |
| Previous Term: | FIR |
| Next Term: | FIS-B |