I'm a big WWII aviation buff, and the original draw of 40k for me was seeing some guy with a scratch-built Ork Fighta-Bommer at my FLGS years ago. The atmospheric craft of the Imperium and the other forces really intrigue me. I've written up a trio of Specialties and a rather large number of planes, with references for those already published and notes on what I need to work on in the future. Enjoy, and PEACH!
https://docs.google.com/document/pub?id=1BOOp5mKqKIURsycaid8EJszqwnBDtvYSKrj1RHSxTtk