Hello Ponyboy:See my later post, "Scenery/Flashing/Solution found.I removed everything from my addon folder except one airport in question. The Manhattan Scenery is in its own folder in the root directory by default. I had saved the original fs9 installation scenery.cfg folder as well and inplemented it. All I added was the airport I included in the addon folder and Manhatten scenery. I still duplicated the problem and solution with only those two sceneries added.Good luck:RTH(Sure am happy to have some confirmation on this issue. Thanks everybody).

Hello Andrew:See my later post: Scenery/Flashing/Solution found.This problem/solution concerns SimFlyer locations as well for me.Good luck:RTH