ice protection
In the days of the venerable S61N, to preheat the main transmission before rotor start,the heater was turned up to full ,interior trim lowered and the gearbox plug pulled.
On the S92 we also have a powerful heater,by lowering the trim the heat could go onto the aircraft skin to decrease the build up of clear ice.
Super Heated Interior Trim,or S**T for short,hows that for innovation crab?