AAC Chipmunks and carb heat
I was watching a Youtube video of Chipmunks used for flying grading at Middle Wallop and I heard a reference to setting the carb heat to hot.
In my day, the carb-heat was always wired in hot and the only time we were supposed to break the wire and try cold, was if the engine failed.
Did the RAF policy change or was it just an AAC SOP?