As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 4 ENGINE FIRE WARNING ILLUMINATED COMPLETED CHECKLIST. IFSD ENGINE NR 4, FOUND "A" LOOP CORE LT SIDE PYLON HARNESS PIN BROKEN. REPLACED CONNECTOR PER S/W/P 20-71-02. ALSO REPLACED HOT SECTION WIRE HARNESS PER POWERPLANT BUILDUP MAN 71-00-01-114A. REPLACED FAN LOOPS PER MM 26-10-1. TESTS SERV, P/N CONNECTOR 878239-02. HARNESS D57A56108-3