What is the term for the altitude that ensures navigation coverage and obstacle clearance in non-mountainous areas?

What is the term for the altitude that ensures navigation coverage and obstacle clearance in non-mountainous areas?

• A. Minimum Enroute Altitude (MEA)
• B. Minimum Off-Route Altitude (MORA)
• C. Minimum Crossing Altitude (MCA)
• D. Maximum Enroute Altitude (MEA)

Answer: (A)

The term that refers to the altitude ensuring navigation coverage and obstacle clearance in non-mountainous areas is generally associated with the concept of Minimum Enroute Altitude (MEA). MEA provides pilots with a minimum altitude that guarantees both reliable navigation and adequate terrain clearance along airways. Specifically, MEA is designed to ensure that aircraft flying along specific routes have sufficient vertical separation from obstacles such as buildings, towers, and other terrain features. It is critical for safe navigation, as it considers the highest terrain and any obstacles, ensuring that these are safely cleared throughout the flight route. In contrast to the other terms, Minimum Off-Route Altitude (MORA) is used to indicate altitudes off established airways to provide a safe margin over terrain and obstacles but does not focus solely on navigation coverage along specific routes. Minimum Crossing Altitude (MCA) indicates the lowest altitude at which an aircraft can safely cross certain points and is not applicable for general navigation coverage. Maximum Enroute Altitude is not a relevant term in this context, as it refers to the upper limit of altitudes for enroute segments, not the minimums needed for safety and navigation.

The term that refers to the altitude ensuring navigation coverage and obstacle clearance in non-mountainous areas is generally associated with the concept of Minimum Enroute Altitude (MEA). MEA provides pilots with a minimum altitude that guarantees both reliable navigation and adequate terrain clearance along airways.

Specifically, MEA is designed to ensure that aircraft flying along specific routes have sufficient vertical separation from obstacles such as buildings, towers, and other terrain features. It is critical for safe navigation, as it considers the highest terrain and any obstacles, ensuring that these are safely cleared throughout the flight route.

In contrast to the other terms, Minimum Off-Route Altitude (MORA) is used to indicate altitudes off established airways to provide a safe margin over terrain and obstacles but does not focus solely on navigation coverage along specific routes. Minimum Crossing Altitude (MCA) indicates the lowest altitude at which an aircraft can safely cross certain points and is not applicable for general navigation coverage. Maximum Enroute Altitude is not a relevant term in this context, as it refers to the upper limit of altitudes for enroute segments, not the minimums needed for safety and navigation.