On Friday, March 29, 2019 at 2:10:31 PM UTC-4, 2KA wrote:
It matches by airport ID, and then verifies by location. Any discrepancies are noted in an accompanying log file. If an ID changes, it will be automatically updated. Yes, new airstrips will be added and closed ones deleted (actually changed to type "Unknown"). Enable that by selecting the option to compute a bounding polygon for adding airports.

The radio frequency will be the one listed in the official FAA data for the airport, whatever that is. Many private airports don't have one, but most public ones do.

Give it a shot. Just follow the link from the airports tab on my site, and upload your file using the Browse button on row 2 of the form. Type "Soar" in the box on row 5, and then submit. That's all there is to it, although you can play with options to get different levels of comment detail, do translations to other formats, get companion airspace files, etc, etc. Like everything on my site, it is all free.

L.

You offer a great free service, Lynn. Thanks. In the case of the airports list though, if I delete an airstrip from my file (for example because I've learned that it's only mowed 25 feet wide), can I prevent it from being re-entered by your site from the FAA data? It may be a fine airstrip for airplanes but not safe for gliders.