TDTWC
Given your background there is a good chance we know each other. I was RAF rear crew for 27 years and subsequently I have worked (past tense) in the aviation training industry.
If you PM me I will answer your questions and also give you some addtional info for you to throw into the mix. You'll also be able to check out my credentials and I'll let you know my past involvement (I'm now retired)
TOFO