In the late 70's I was a Hangar rat for Rod Small who had G-ARDE on the display circuit. At the shows we went to we would have fun by asking the public to name the which system was hydraulic powered. Brakes? - No they're Pneumatic, Flaps? - pneumatic again, Undercarriage? - pneumatic. What else is there? Well the windscreen wipers are hydraulic.
Also this was an aircraft that more than most carried it name of its manufacturer, airframe was pure de Havilland and used Redux bonding, the engines were de Havilland Gypsy Queens with de Havilland propellers. Talking of the propellers IIRC the Dove was the first British aircraft designed with reverse pitch propellers but this had to be disabled (a screw knob detent on the centre console) as the engines couldn't handle the change of thrust direction.