What does MEF stand for in aviation terminology?

The term MEF in aviation terminology stands for Maximum Elevation Figure. This concept is critical for pilots, especially when navigating in mountainous or hilly terrain. The MEF provides information about the highest elevation within a particular area on the sectional charts, which includes the highest terrain and man-made obstacles. By using the MEF, pilots are better informed about the vertical clearance they have above ground level when navigating an area.

Understanding the MEF is essential in flight planning and operation, as it aids in avoiding obstacles due to unforeseen elevation changes in an environment where terrain may be unpredictable. It helps improve safety during flight by minimizing the risk of collision with terrain or obstacles.