Pilot/Controller Glossary
EN ROUTE MINIMUM SAFE ALTITUDE WARNING (E-MSAW)
This reproduces published FAA reference text for study. It does not replace the current official FAA publication or regulation.
A function of the EAS that aids the controller by providing an alert when a tracked aircraft is below or predicted by the computer to go below a predetermined minimum IFR altitude (MIA).
Retrieved from ecfr.gov on July 18, 2026.