I was looking for a way to include Airships in the campaign I'm DM'ing for. This is exactly what I've been looking for. While I was not looking to include aerial combat as part of the story, I'm pretty sure it will get derailed enough that it'll happen. Isn't that always the case?
It is well-written (any typos and mistakes are being addressed, as I'm told), well-segmented and it is very easy to find what you're looking for. The document is incredibly detailed; to the tiniest thing which I, personally, did not think would be required to consider. Case-in-point: the Scrying Spells, which as I understand is a "radar" of magical function.
The example provided helps visualise the implementation of the rules written within the document.
I definitely recommend this to anyone who wants to include airships, even in the most minimal capacity.
[5 of 5 Stars!]