Daniel_csr,
I've yet to have this issue as i said in the tech issue i think its just a microsoft flight simulator x logo that shows when a texture hasn't loaded up. In this case texture that has not loaded but is one that cant be seen.
Many people do this to every thing i know this because I know a little bit about 3D modeling and applying textures to a model. :) little off subject but just sayin. Sorry for your issue though   :(