What was found
AIR CONDITIONING WIRING TO PRESSURE SWITCH FOR THE COMPRESSOR MOTOR WERE CHAFED THROUGH, AND SHORTING TO THE MOTOR MOUNT. REPAIRED THE WIRING IAW AC43-13 AND PILATUS PC-12/45 WIRING DIAGRAM AND FUNCTION CHECKED PER PILATUS PC-12 AMM, WIRES WERE SECURED SO NOT TO CHAFF. WITH DOORS CLOSED AND RAN AIR CONDITIONING SYSTEM AND TURNED ON ALL THE AVIONICS AND EQUIPMENT IN THE AIRCRAFT TO CHECK FOR ANY INDICATION OF ELECTRICAL BURNING SMELLS FOR AROUND TWENTY MINUTES, BUT NONE WERE NOTED.