"Simple math makes the distance to the observed object 1.9 km. (2000 feet below and 1.8 km out) at a height of 6700 feet. Scanning the forums for best opinions on the practical meaning of "Visual Line of Sight" yields consensus…"
"What a lot of hog wash. Regardless of acuity of eye sight, there is no way that anyone can not see an object 2000 feet below you and 1.8 km away unless it is as big as a house. I don't know of many flying houses. I am…"