No and possibly yes. (Helpful answer! )

There isn't an option to do it as such. If you've got your settings to show reflective textures, it is a global setting for all aircraft that have them.

The "possibly yes" bit comes in two forms:

First, not many aircraft have reflective texturing because of the frame rate hit.

Secondly, if however you happen to have some that do, then the follwing options that I'm aware of may apply. The reason I'm a little vague about this is because I'm not an expert with a paint package so I might have this wrong but I've based my answer on what knowledge I have.

1) If it's an aircraft that's purely A.I. as opposed to one that's flyable as well, you could remove the alpha layer of the paint job in a suitable paint program. It's my understanding that this is the layer with the reflective texturing in it.

2) If you have aircraft that you fly that are used as A.I., I think you'd need to recreate a duplicate model for purely A.I. purposes if you wanted to retain the reflective textures for your own use. Set up a copy of your flyable version with slight alterations in the Aircraft.cfg so that FS2002 recognises it as a separate aircraft and replace the A.I. call for your flyable plane with the duplicate. Again, you'd remove (or modify if you have the skills required) the alpha layer in the duplicates.

Sorry if it sounds hideously complicated (it does to me!) but I can't think of any other way to do it myself.