With AvareX 0.57 and current charts/data, FLF (TX23) is depicted on the sectional AvareX uses. I can locate TX23 using the FIND icon (bottom right) and go Direct, add to plan, etc. The "airport" page has no frequencies (Main) but does have an airport diagram (AD). So TX23 is "on the map" and in the database. However, a longpress on the map will not load the TX23 "airport" page.
There is inconsistency in lookups by identifier vs. coordinates, etc. which impact the user experience.
I recommend adding an "airport" icon to the bottom row of icons (MAP, PLATE, PLAN, FIND) for the most recent airport lookup (Main, AD, etc.).
Blue Skies!