Worthy of an Honorable Mention. Mostly written in Italian with English translations. He borrowed radial.wav from Jim Self's site, with credit given there. In this episode, Don gets shot down by the Red Baron. This page is mostly screenshots from the game.
Site needs work.
My browser doesn't display Kanjii, so much of this Japanese page is Greek to me. This link just brings up a list of files, FTP-style. Amy Shingledecker A neat little personal page with some other interesting sound effects. A collection of other interesting aviation sound files can be found here. A short directory listing with a nice sound file.