Hey Bob/Richard!
Whilst sitting through my ground theory courses, I have been using your books from BAK thru to my current IREX as a way to back up and confirm all the "knowledge" passed onto me.
I'm proud to say that with my head down for significant study periods over the last three weeks, I kicked IREX's butt with a 93%. I have to be totally honest and say that a significant amount of the questions (at least half) I have never seen the wording of in practice exams before. CASA upto their tricks as usual!
Thank you so much for having a text that is simple enough to explain things that are seemingly impossible to understand at times. Your books certainly have helped me throughout my journey, and whilst the mysterious 100 still eludes me, I'll settle with a 100% first time pass rate! I would and regularly do recommend them to ANYBODY wishing to learn about flying.
Only because I know a lot of students struggle with the questions, is it possible that on the next update of your book, you include a little more information on airframe icing in clouds? Fortunately I had my CPL Met book to help out for the study side of things, but I still got the question wrong - even though I sat and stared at it for a good 5-6mins at the end of my exam.
Next stop, MECIR flying... and then ATPL! If only there were BT texts available for those subjects