The Central District News posted the map seen here of the glidepaths for Sea-Tac. The red line is the glide path to the new third runway; the green line is the old one. If you live under these paths, have you noticed a change in airplane noise since the third runway opened recently? If you’re on the west part of the Hill, do you hear more noise? Here at the Blog, we live between those two paths, and have noticed a decrease in noise, but not since the third runway opened. It got quieter months ago for some reason.