I added the texture to the airtrains that are stationary, now they match.
I can not add any pictures since I am using a different computer and it can't run GTA3 (crummy am I right?)
The Airtrain is the airplane that goes about its business in the Shoreside Vale Airport
BEFORE I ADD ANY CONFUSION:
This is just a retexturing of the airtrain, doesn't make it drivable or whatever