Gimme a break...really?
According to Captain Chesley “Sulley” Sullenberger, the FAA has classified San Francisco International as a “special airport: “It is surrounded by water, and of course water is a featureless terrain where depth perception can be difficult. There is shifting winds, low visibilities—so there is many things that make it special. Plus there is high terrain, just past it.
http://www.cbsnews.com/8301-201_162-57592529/plane-crash-at-san-francisco-airport/