Well, that pisses me off! I just finished writing a thorough and articulate review of this thing only to have the web page delete it. Rather than go back and try to recreate it (your loss, DriveThru), I'll just hit the high points:
Scenarios -- sort of dull and ho-hum -- failed to live up to their promise, despite enough wrinkles to potentially make them truly awesome. Too regimented and requires the players to follow the script pretty closely to have any possibility of winning (or, in at least one case, even surviving) the scenarios. Yes, I know this is pulp, and we're supposed to give them the chance to overwhelm fate with their two good fists, but the scenarios require more work from the GM than they should have to make that happen. Plus too many opportunities to explore other facets of the scenarios were ignored in pushing the players towards the desired conclusion -- especially in the second scenario.
Graphics -- disappointing, few illustrations of the zeppelins and most of those too small to read without a magnifying glass (thank God for the zoom button on Adobe); plus in at least one case it looks like a simple reproduction of what Chaosium originally published in their first edition of Call of Cthulhu back in the 80's. Several of the pictures and maps were pixilated as well, making them harder to read than they should have been.
Technical Content -- overall excellent -- the authors provided statistics and brief descriptions of most of the rigid airships of the day, as well as additional aircraft and weapons from the '30's including the German "potato masher" hand grenade and various machine-pistols and rifles of the era.