Found this thread while trying to explain what the Husky was on another thread.
This aircraft was also the first aircraft I ever flew (much to the consternation of the two other cadets in the back seat) when undertaking AEF flights with 5AEF at Marshals with my CCF RAF section in 86/87 or thereabouts.
I also remember John Blackmore - I seem to recall the magic phrase when asked what you would like to do was "How about some aerobatics please Sir", and he would then proceed to chuck us all over the sky in the Chipmunk! Couple of grey-out moments, but I never needed the paper bag
Happy days!