Hi there. You may not know, however, I have been working in the background with the Airport Editing Team since 2016. I thought I would give you an update on where we are with the project. We are currently 16% through editing all of the airports!
Specifically for the USA we are 11% through editing all of the airports
If you would like the full listing of airports and when they were completed the info is here:
Non-USA Airports: This list is typically updated weekly
USA Airports: Also typically updated weekly
I also have maps on Google Drive which I maintain with the same info.