Minimum Enroute Altitude (MEA) is usually associated with which airway structure?

Minimum Enroute Altitude (MEA) is usually associated with which airway structure?

• A. VOR airway
• B. Jet route
• C. Direct-to segments only
• D. VFR routes

Answer: (B)

MEA is the lowest altitude between fixes on an IFR enroute segment that guarantees obstacle clearance and reliable navigation signal reception. This concept is most closely tied to jet routes—the high-altitude airway network used for IFR flights above 18,000 feet where maintaining both obstacle clearance and continuous NAVAID reception along the route is essential. While low-altitude Victor airways also have altitude minima, the standard emphasis in this context is on jet routes. Direct-to segments aren’t fixed airways with published MEAs, and VFR routes aren’t IFR airway structures, so they aren’t the usual context for MEA.

MEA is the lowest altitude between fixes on an IFR enroute segment that guarantees obstacle clearance and reliable navigation signal reception. This concept is most closely tied to jet routes—the high-altitude airway network used for IFR flights above 18,000 feet where maintaining both obstacle clearance and continuous NAVAID reception along the route is essential. While low-altitude Victor airways also have altitude minima, the standard emphasis in this context is on jet routes. Direct-to segments aren’t fixed airways with published MEAs, and VFR routes aren’t IFR airway structures, so they aren’t the usual context for MEA.