Not exactly, since most armor-weathering techniques are too heavy-handed for aircraft… Like Manny said, aircraft move through the air, AFVs move through (rather than on) the ground… Si there’s little effect from the ground itself, other than mud spatters or dust, and little from the air, other than the sun or rain (and also the staining from POL, exhaust or gunsmoke)… So that eliminates 80% or so of the armor weathering techniques…
However, you’re not weathering wood itself, nor the metal parts … You’re weathering paint, no? So that’s what you can concentrate on…
Aircraft paint generally does two things in the weather… Fade and chip… Chipping isn’t so prevailant on wood, so just the metal needs a little of that. Fading is accomplished a couple different ways for me… I either airbrush a heavily-thinned and lightened shade of the base-color, or use pastels… Either way, it’s the paint being changed… And even on wood, there will be wear from foot-traffic in certain ares, exposing what’s underneath. Keep in mind though the aircraft plywood will be varnished under the paint, so instead of showing bare wood, it’ll more likely be dirt & grime ground into the varnish.
At any rate, here’s a site that might help you with the locations and types of discoloration you might be interested in. Granted they’re B&W photos, but the patterns are still visible…
http://www.vvsregiaavions.com/VVSHTML/vla51.htm
Here’s a couple I found interesting. Note the wear pattern on the wingwalk and staining at the unfinised metal aft of the exhaust:
!(http://img.photobucket.com/albums/v233/HansvonHammer/Aircraft Profiles/Soviet/La-5-7/La5-43.jpg?t=1288920270)
And at the metal cowl edges, as well has the brush-painted area aft of the canopy where it looks like some battle-damage may have been repaired, as well as the brush-painted slogan:
!(http://img.photobucket.com/albums/v233/HansvonHammer/Aircraft Profiles/Soviet/La-5-7/La5-8s.jpg?t=1288920386)
Here’s another one that’s kinda interesting. Note the brush-painted/fading markings again, the underlying color trying to get through on the nose, discolored bare metal and exhaust, and the scuffed prop:
!(http://img.photobucket.com/albums/v233/HansvonHammer/Aircraft Profiles/Soviet/La-5-7/La5-17.jpg?t=1288920773)
Note chipped prop at 7 o’clock blade
!(http://img.photobucket.com/albums/v233/HansvonHammer/Aircraft Profiles/Soviet/La-5-7/La5-16.jpg?t=1288921533)
Obviously an outdoor museum exhibit, but a good color shot anyway:
!(http://img.photobucket.com/albums/v233/HansvonHammer/Aircraft Profiles/Soviet/La-5-7/La-5_Moscow.jpg?t=1288921010)
Anyway, hope it helps ya out a little…