White glue or to give it's correct name, PVA (Polyvinyl Acetate) Glue is available from most craft and diy outlets. While excellent for glueing wood, card and paper, it has limited used with plastics and resins. Like all things, you get good and bad varieties. I tend to use Titebond, which is an alyphatic resin glue, which when dried, tends to look like urine stains. Great for glueing up plywood and polystyrene for dioramas.I can grasp the concept of white glue drying clear (though I've no idea what sort of white glue it is) but can't come to grips with how you hold the glue in place in a big hole until it cures.
I take it that you won't be using a similar technique for the cockpit windows.
Evo-stik do a good pva as do B&Q. I tend to steer away from "craft" pva's as they are watered down. I have used dried pva for making headlight lens', filling dashboards and glueing vehicle windscreens. Mixed with plastic sawdust it makes a good gap filler. Hope this helps.
To make Windows or lens', use a template on a clean flat surface and drop the glue into it. Once it has dried clear, insert into the orifice of choice (ooh err). Alternatively, hold the model flat and drop the glue in place. The Model will need to be kept flat until the glue sets.
White glue is great for making artificial bogies with. Simply put a drop on your hand and keep rubbing it until it forms a rubbery lump. Attach to nostril and sit in a pub or restaurant. It's amazing how many people look at it but don't tell you that you have a large snotter hanging from your nose.