A couple of quick questions for you. I have done a couple of new airfields for FSX, both are 3 active runways in one location purely for AI purposes [this, by using the old method of creating 3 airfields at the same location, as I used to do in FS9]. A problem common to both is that the aircraft [AI] will land and taxi just fine but when they turn off the taxiway and go along the apron parking to the jetways, they climb 5ft into the air. They don't jump up but seem to "climb up" to the jetways. This also happens with GA spots and for all aicraft types. I attach some pix showing this [aircraft selection was deliberate to amplify the problem]. The second airfield is a Vietnam jungle helicopter base. Again no problem with landing, taxiways are good but at the parking spots, they are 5 ft in the air again [OK for my choppers I suppose!]. Now I do have elevation problems at the Jungle Base so I will have to do a re-write, but the first airfield is at sea level and you are familiar with it, as it is my NorwayFSX airfield. Black grass. My problem, I used a downloaded freebie grass texture upgrade which was very good but I cannot see grass when I select it using ADE for Taxiways, Apron routes and the Apron itself. Do you have the original airfield grass filenames to hand so that I can seek them out and re-install the default grass? I appreciate that the apron has its own visibilty problems, but all my "selected" grass, apart from the runways, is black. I did RTFM for both of these!! Charlie.