Pilot/Controller Glossary
AIRCRAFT CONFLICT
This reproduces published FAA reference text for study. It does not replace the current official FAA publication or regulation.
Predicted conflict, within EDST of two aircraft, or between aircraft and airspace. A Red alert is used for conflicts when the predicted minimum separation is 5 nautical miles or less. A Yellow alert is used when the predicted minimum separation is between 5 and approximately 12 nautical miles. A Blue alert is used for conflicts between an aircraft and predefined airspace.
Retrieved from ecfr.gov on July 18, 2026.