Title: How low can a fighter jet fly safely? - Quora
Headings: How low can a fighter jet fly safely?
How low can a fighter jet fly safely?
Scot Johnson

Content: We used to leave wakes in the water, then pull up, look back to see who had the best wake. There is an aerodynamic effect called g round effect. It is the reason that sometimes an aircraft will tend to “float” down the runway after flaring, instead of touching down sooner. On some of these extreme low-level flights, I would experience ground affect. I would get so low that I could feel resistance and pressure if I gingerly pushed the stick slightly forward and any lower. I knew that was as low as it should ever get! I had hit, the ground effect barrier! [Ground affect occurs at one half the aircraft’s wingspan. My F-4 had a wingspan of 38ft. Half of that meant I was only 19ft/6m above the water at a very fast speed.