Definition
An En Route Decision Support Tool (EDST) notification that informs the controller when an automated route action has been taken on a flight, such as a route amendment, route conversion, or route adaptation applied by the system. It appears on the controller's display so the change can be reviewed and managed.
Plain English
A message that pops up on the controller's screen telling them the computer system has just changed something about a flight's route, so they know to look at it.
Context Anchor
Pilots may see this term in the Pilot/Controller Glossary or hear about it when discussing how en route controllers manage route changes behind the scenes.
Derivation
EDST stands for En Route Decision Support Tool, the controller automation platform that generates these notifications. "Route Action Notification" is plain English: a notice that an action has been taken on the route.
Why Pilots Care
When EDST processes a route change for your flight, the controller may issue you a routing amendment as a result. Knowing the term exists helps make sense of why a re-route or clearance change sometimes arrives without warning.
Intuition Check
Do not read “notification” here as a message sent to the pilot. In this FAA context, it is mainly an air traffic control system notice for the controller.
Example Sentence 1
The controller saw a Route Action Notification on EDST and read the amended routing up to the flight crew.
Example Sentence 2
After reviewing the Route Action Notification Edst, the controller issued the pilot an amended clearance to the new waypoint.