What was found
(CAN) FOLLOWING RETURN FROM A MISSION THE PILOTS OF B300C AIRCRAFT, REPORTED THAT THE RIGHT SIDE PITOT HEAT WAS INOPERATIVE. MAINTENANCE CARRIED OUT TROUBLESHOOTING AND DISCOVERED THAT THE PITOT HEAT POWER WIRE H3B20 LOCATED FORWARD OF THE NOSE PRESSURE BULKHEAD AT APPROX. FUSELAGE STATION 65 WAS CHAFED ARCED AND BROKEN WHERE WIRE PASSES THROUGH BULKHEAD. WIRE H3B20 WAS REPAIRED AND PITOT HEAT FUNCTION CHECKED SERVICEABLE, AIRCRAFT RETURNED TO SERVICE. PLEASE SEE ATTACHED PHOTOS. (TC# 20190807002)