In article ,
says...


http://us.cnn.com/2007/US/09/11/airl...ing/index.html

"He blamed resistance from environmentalists for the government's
failure to move more quickly toward a satellite-based technology
that's been 10 years in the making.

"'Residents that have homes that would be in that flight path are
saying no,' Castelveter said."

I'm not sure how using GPS would change airport flight paths.


Well, airports themselves don't fly, but concerning approach paths, how about
the fact that non-overlay GPS approaches use different paths from other
existing approaches. Does that make it more clear?