What does MEA represent in terms of air navigation?

MEA stands for Minimum Enroute Altitude, which is a key concept in air navigation. This altitude provides critical safety information for pilots during flight operations along a navigable route. MEA ensures that aircraft remain clear of terrain and obstacles while also guaranteeing reliable navigation service within controlled airspace.

The Minimum Enroute Altitude is established for specific segments of a route and is calculated considering the highest elevation of the terrain within a specific lateral distance from the center of the route, plus an additional obstacle clearance buffer. This helps maintain a safe vertical clearance, allowing pilots to navigate confidently and ensuring that they are operating above any potential hazards.

Understanding MEA is vital for effective flight planning and maintaining safety during enroute segments of flight. Without adherence to MEA, pilots could unintentionally fly at altitudes that may risk collision with terrain or obstacles. MEA also plays a role in ensuring that aircraft are positioned at levels where air traffic control can effectively manage aircraft spacing and communication.