Since I once worked and flew to a lot of small airports in PNG I am keen to try the "pngeast1.zip.13 PNG airports"

In the notes about the airports on this site the download notes say you need:

Requires pngtext1.zip (below) , Apt textures, Nova textures, Gerrish Gray's Trees (all here) . By Adrian Shortall. 3.8MB

I could not find an all in one file where the link pointed to "essential files for FS2002" there were a few versions of Gerrish Trees and Nova Textures so I got them all but do not know what the Apt textures are.

Could someone let me know what the Apt textures are?

The only close thing I could see were the "Airport 2.02 Textures"

Any help would be appreciated.