I've just uploaded a new version of the airports location data to
http://stat-computing.org/dataexpo/2009/supplemental-data.html. This
comes from a new source suggested by Robert Allison, along with a few
extras collected by Ryan Hafen and myself.
Please let me know if I'm missing any others.
Regards,
Hadley
Oops, again, that was a silly error on my behalf. The states for most
of the airports are up there now (all apart from the 12 added by
hand). Country is necessary because there are a few airports outside
the US!
Hadley