What does AGL stand for in aviation terms?

AGL stands for Above Ground Level, which is a crucial term in aviation used to describe the altitude of an aircraft relative to the underlying terrain or surface. This measurement is particularly important when conducting various flight operations, including takeoff, landing, and when flying at low altitudes to ensure obstacle clearance.

Understanding AGL helps pilots gauge their height above ground, which is essential for safe maneuvering, especially in areas with variable terrain or while flying in urban environments where buildings and other structures can pose risks. This term is distinct from mean sea level (MSL), which is another common reference point used for altitude.

By grasping the concept of AGL, pilots can better navigate and maintain safety margins in their flight operations. The other terms provided do not accurately reflect standard aviation terminology, thus reinforcing the significance of AGL as a commonly used and understood metric in aviation.