As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE AFT RIGHT FIRE LOOP DETECTOR WIRE HARNESS CHAFING T/R AT LOOP CONNECTION 1 O'CLOCK ONLY OUTER TEFLON SLEEVE WORN THROUGH. RE-DIRECTED RE-INSULATED AND SECURED NR 1 ENGINE AFT R/T FIRE LOOP DETECTOR WIRE HARNESS ASSEMBLY IAW BOEING 737 SWPM 20 10 13, NO DAMAGE NOTED TO T/R OR WIRES.