pointSixtyFive

EN ROUTE MINIMUM SAFE ALTITUDE WARNING (E-MSAW)

Pilot/Controller Glossary with JO 7110.65BB, Change 3, effective July 9, 2026 · Official text on faa.gov

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).

Also called E‐MSAW.

In the 7110.65

Used in 2 paragraphs of JO 7110.65BB.

  1. 2-1-6Safety Alert
  2. 5-13-2En Route Minimum Safe Altitude Warning (e‐Msaw)