What is the MEA intended to ensure for IFR flights?

The Minimum Enroute Altitude (MEA) plays a crucial role in IFR (Instrument Flight Rules) operations by ensuring two primary factors: adequate obstruction clearance and acceptable navigational signal coverage.

When flying at or above the MEA, pilots can expect to maintain a safe vertical separation from terrain and obstacles, which is vital for avoiding potential hazards during flight. Additionally, the MEA guarantees that pilots receive reliable navigational signals from ground-based navigation aids. This dual assurance of safe altitude and robust navigational assistance is fundamental for the successful operation of IFR flights.

Other options might touch on relevant aspects of flight operations, but they do not encapsulate the specific intent of the MEA. For instance, while they mention minimum safe altitude or obstacle clearance, they may overlook the critical element of ensuring navigational signal integrity, which is essential for maintaining route fidelity and safety.