I'm planning a "straight line" challenge for myself and AS I've only really flown europe and NZ I thought where better than flying east to west across the states. I will only fly in a straight line west, and need a comprehensive listing of US airfields.
Is there a downloadable one?

I plan to use the DH Dove.

The restrictions (should anyone want to do one)  are you must use a vintage plane, no more than 2 engines. you must fly at least 100nm a leg. and you must use real world weather. No GPS, as close to due west as possible, deviations for airfields are allowed.

That's it. Enjoy if you do it.