On a Sectional Aeronautical Chart, what does MEF indicate?

The correct answer, Maximum Elevation Figure, refers to a specific value depicted on a Sectional Aeronautical Chart that denotes the highest elevation within a specific area, considering obstacles and terrain. This figure provides pilots with critical information about the topography they may encounter while flying, ensuring they maintain a safe altitude to avoid collisions with terrain and structures.

MEF is particularly important for pilots flying under visual flight rules (VFR), as it helps them gauge the minimum altitude they should fly at over a given area, minimizing the risk of encountering higher ground unexpectedly. The MEF can typically be found within closed areas where terrain could affect flight.

Other options, while related to aviation and flight operations, do not accurately represent what MEF stands for in the context of aeronautical charts. Understanding the MEF is essential for ensuring safety and effective navigation during flights.