As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) 3 WIRES P/N BMS13-31 TYPE 1 CLASS 1 AWG4 AT CONNECTOR P/N FRF0E28-22S LOCATED FROM APU SHROUD THEN 3 FEET FORWARD TO SPLICES. FOUND TO HAVE MULTIPLE LONGITUDINAL SPLITS IN INSULATOR COATINGS. SPLITS FOUND TO BE 6 INCHES TO 12 INCHES IN LENGTH WITH BARE WIRE EXPOSURE UP TO 0.100 IN WIDTH.