Definition of Above Ground Level (AGL)
Above Ground Level (AGL) refers to the height of an object or aircraft relative to the local terrain or water surface. AGL is measured by calculating the actual height above the surface of the earth, whether it is land or water.
AGL is an important concept in aviation as it helps pilots maintain a safe distance from the ground during takeoff, landing, and flight operations. AGL is particularly important when flying near hills, mountains, or other elevated terrain features that can alter the altitude of the aircraft relative to mean sea level (MSL).
The use of AGL is also relevant when flying in areas where the ground elevation is uneven, such as in regions with various geographical features or coastal areas. In such cases, using AGL can help pilots navigate safely and avoid obstacles, such as trees, buildings, and other structures that may extend above the terrain.
Overall, AGL is a critical parameter that pilots must be aware of to ensure the safety of their flight operations. By understanding the actual height above the surface of the earth, pilots can make informed decisions about their flight path and maintain a safe and efficient flight.
« Back to Glossary Index