Mark Six, you are nearly correct. Close but no cigar. ADFHS had at least 1 Perhaps 3 damaging (unsure of the categories, but at least 1 was a right off) incidents on hyd off on the BA’s. I went through on BA’s can’t recall if I was on the first or second BA course, we were taught to hover and manoeuvre in the hover hyd off. Accidents happened, thankfully no serious injuries. The Pomms had the legend Keith Champion to learn from, who was an outstanding flight instructor, mentor and champion that learnt his Squirrel craft at ADFHS prior to the World’s ****test cricket team getting BA’s and twist grip throttles.
I digress however, to suggest that the military was beyond reproach is incorrect.