Just looked on ebay and someone has a printed manual...$3.85... looks a little different than mine though... the picture they have says "Manual" at the bottom, mine says "User Guide". The game was released in Europe before North America and I had preordered it so maybe that's the difference. Never really spent much time in the manual... I just pulled it out the box today and noticed that Razorworks listed 10 Beta Testers on the last page... had to laugh... never realized that half the guys I was flying with or against were beta testers. Good luck!
https://www.ebay.com/itm/B001CM6RWK-Enemy-Engaged-RAH-66-Comanche-Versus-KA-52-Hokum-Manual/302574166101?epid=1480150305&hash=item4672d36055:g:l~0AAOSwzXxaPEhd