AGL Density Altitude Ground Effect 
Pilot Institute
OCTOBER 2, 2024
It’s not magic—it’s ground effect. When you’re flying near the ground, within one wingspan, the aerodynamic forces start to change. Your wings don’t create as much drag as they would at higher altitudes, which gives you extra lift. Ground effect is a phenomenon that every pilot must master.
Chess In the Air
JUNE 24, 2022
He only needed a glide ratio of 14:1 to reach the airfield to arrive at a typical pattern altitude of 1,000 ft AGL. Shmulik flew quite fast at ground speeds between 100 and 130 kt, carrying a lot of extra energy. At this point he still had an altitude of 8,275 ft MSL, i.e. 2,739 ft AGL.
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