What was found
PILOT REPORTED STANDBY PITOT HEAT INOP AND NO CIRCUIT BREAKER TRIPPED. TROUBLESHOT AND FOUND STEERING TORQUE TUBE ABRADING WIRE BUNDLE AND CAUSING A SHORT THAT CUT WIRE IN HALF. REPAIRED WIRE AND RE-ROUTED WIRE BUNDLE. IAW CHAP 20-10-06 TABLE 6, AND 20-21-03 FOR RE-ROUTING OF WIRE BUNDLE. THIS COULD HAVE BEEN PREVENTED IF THE WIRE BUNDLE WAS INSTALLED IAW CHAPTER 20-21-03 OF 560XL MM. (X)