What altitude is identified as MEA?

The term "MEA" stands for Minimum En Route Altitude. This altitude is essential in air traffic control, as it ensures that an aircraft maintains a safe altitude while en route between specific waypoints. The MEA provides a guaranteed vertical clearance over both terrain and obstacles, as well as ensuring adequate communication coverage with air traffic services.

Choosing the correct MEA is crucial for navigation and safety, as it is established based on factors like the topography of the flight path and the presence of nearby navigational aids. By adhering to the MEA, pilots can minimize risk and maintain safety across various sections of their flight.

The other options refer to altitudes that do not align with the defined MEA. Maximum Emergency Altitude, for instance, is not a standard term in aviation; rather, it describes an altitude that might be used for specific emergency protocols but does not serve the purpose of navigation safety like the MEA. Minimum Elevation Altitude and Maximum En Route Altitude are not standard definitions in the context of en route flight safety, making them unsuitable as a description for MEA.