I'd actually point you towards another of FASA's lines - Shadowrun. In the core book, the history section is written by FastJack, a famous runner from the previous (3rd) edition who runs a private network for elite runners known as JackPoint. All of the supplements are styled after articles written for JackPoint by one of the runners on the network. Every chapter has a fluff section, followed by a rules section, but the two are very clearly delineated. Coolest of all, since JackPoint is a collaborative network where the best share the tricks of the trade, all of the members are allowed to edit articles and add their own notes and ideas. What this means is that you'll have a paragraph where the article author writes something, and then there'll be a post by another JackPointer (as they're called) supporting or refuting what the author just said, or possibly adding there own thoughts or material, and it's often followed by the members arguing over who's right and where the truth lies, but it's open enough that it can be interpreted any which way. Best of all, each poster is a defined character, with certain traits or styles. After a while, you get to recognize all of the characters (all of who have cool nicknames, such as Kat o' Nine Tales, Netcat, Kay St. Irregular, Slamm-O!, Clockwork, Ecotope, etc.) and you get to feel like you know them.
The result of this rambling is this: maybe this could be done as sort of a "Pilot's Survival Guide" - a guide written by pilots, for pilots, which has been passed around and edited by some of the best pilots of the years, including pirates, militia pilots, privateers and security pilots. It could include articles on flying and fighting (rules), a world gazetteer (history/world intro), a list of aircraft, etc. Every section could have a different author, and other pilots could add their own commentary (ie, we could have fictional characters debating the merit of a given aircraft or the motivation behind a certain historical act). I can just picture it as this sort of big, thick, dog-eared book, given to a new pilot by a veteran comrade, saying "Here. Read this. It'll teach you everything you need to know."
Good judgement comes from experience. Experience comes from bad judgement.
"Is it heavy?" "Yes." "Then it's expensive - put 'em back." -Jurassic Park
With me surprises are rarely unexpected. - Any Pink Panther movie