I was using Traffic Toolbox to dump of Airport data for an update to MyTraffic. The log generated the following message for KMEM, KCLT and KIAD; "has runway with unsupported surface type".
As a result all three are missing the Runway data in the Airports.txt file.
I can manually enter this data, but it would be nice if it was addressed in some future update for FSX.
Thanks,
Ernie