The author clearly loves planes and the study of early air combat, and it shows in the builder, combat rules, and gorgeous plane renderings. There's a beautiful Miyazaki-style flying adventure game in this book.

Unfortunately, that game is buried under a lot of questionable worldbuilding choices--why are there nazis in this emphatically-WWI-era game? Why are they described as "monsters" when the Fishers are supposed to be about proudly reclaiming the "monstrous", and all the cited sources emphasize the importance of humanizing the enemy?--along with some truly terrible art (conveniently missing from the preview). The one Miyazaki-style image of a woman falling out of a plane only serves as a reminder of what this game should have been; the rest (again, aside from the excellent rendered planes) is straight off DeviantArt.

Fortunately, the setting is easy to swap out for something more in line with the sources, and the few bits of out-of-place magic are confined to the setting and a playbook or two. The core of the game remains intact, though I do wish the aircraft construction rules were included in the books and not on a third-party website with a necessarily limited lifespan.

I highly recommend reading through a copy of this game: the dogfighting and stress mechanics because they form a genuinely good core gameplay loop, and the rest as a cautionary tale. I do not recommend anything but the PDF copy unless you strongly prefer physical media and it'd cost more to print yourself.