Dennis, my sympathies, I've published the 'Jack Mawgan Trilogy' through Lulu and attempt to promote it via my website 'www.geoffnewman.co.uk'. Each book has a helicopter link but perhaps with the exception of the final book 'THE MARK' is not heavily oriented towards the rotary world. As 'crime-thrillers' I focused on the crime and corruption that we see and experience in our daily lives and particularly in the aviation world.
Good luck with your book
G.