Is there a special texture file that surrounds default airports (the grass area)!And can it be removed.Thanks for your time.ed

Yes and yes. You can use Sbuilder (freeware) to remove the airport polygons (that's what the grassy areas are called) and/or create new ones. The documentation that comes with the program is pretty good...be sure to read it. :( If you haven't worked with a program like this before the initial learning curve can be a bit steep, but it's well worth it. The program lets you make a bunch of different modifications to your terrain.

Youj didn't indicate which FS version. For FSX you could also use Airport Design Editor (ADE). In FSX typically a single polygon is used to surround the airport area. This polygon is an airport background with three attributes :1. flatten -- causes entire airport to be at a single altitude2. exclude autogen -- prevents any autogen from being generated3. mask class map -- substitutes a texture based on the underlying landclass value. In most cases this will be grass but not always.FS9 works about the same but a second polygon is required for the flatten. The main one just does the autogen exclusion and texture bitmap change. FS9 provides more control over the specific bitmap used.scott s..