Just to add clarity re. the post above…
Meigs Field now comes included with the 40th Anniversary Edition of MSFS, released today. Therefore there is no need to download any 3rd party add ons to introduce this airfied into MSFS.
If you are using a 3rd party add on for Meigs Field, then to prevent conflicts, it is advisable to remove one of these airfields from the in game content manager