John Liebacher has made the FAA airport database available at:

http://soaring.aerobatics.ws/TP/FAA

If you have SeeYou, you can load this database, then overlay your
turnpoints, and reject nearby duplicates. This will update the airport
data in your exiting turnpoint database, plus give you landout airports
for the whole country. You can then trim this down as much as you like.


5Z wrote:

Also at the FAA page is a Digital National Flight Database with all
airport inofrmation. It's not clear, but I asume all the frequency,
etc., info is there as well. It would be really cool if someone came up
with a scheme to take what is currently available at the Worldwide
Turnpoint exchange (http://soaring.aerobatics.ws/SOARING/JL/TP/) and
somehow update the airport portions of the available files with current
frequency info. Heck, I'd be willing to pay a reasonable subscription
rate to know that the comments field in my GNII database is current, as
this would be yet another reason to keep the sectional chart tucked
safely behind my elbow.

-Tom