I tried restarting the mission, but it doesn't work.
Looking at the aircraft glass didn't get me further either, it's not too different from some other transparent examples in game (FD, trees)
Judging from these it must be somehow possible to eliminate the rainbow effect, but I just can't figure out how
In the meantime I did find out that there doesn't have to be an alpha channel in the texture, just enabling alpha+disabling z-buffer write in S3D is enough to get this strange effect.
