Open cockpit.ac with notepad and search for a line "
MATERIAL "Material.002" rgb 0.0134 0.0124 0.0133 amb 1.0000 1.0000 1.0000 emis 0.0000 0.0000 0.0000 spec 1.0000 1.0000 1.0000 shi 50 trans 0.0000
" and replace it with "MATERIAL "Material.002" rgb 0 0 0 amb 0.2 0.2 0.2 emis 0 0 0 spec 1.0 1.0 1.0 shi 50 trans 0"
This line is from a file made by ac3d.
Then the black should work. Some explanation why I can not fix it completely yet: Blender doesn't export black material correctly. These objects which look odd have no textures at all, only material. I'm exporting my cockpit.acs from my .blend file and this is why I can't fix the color until I am able to edit the ac file itself.
I hope you understood my explanation even a little