As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEVEL 3, FIRE WARNING NR 3 IN FLIGHT. USED BOTH FIRE EXTINGUISHING BOTTLES. LANDED UNEVENTFULLY. FOUND PYLON LOOP A HARNESS CREATING THE HIGH RESISTANCE READING. R & R WIRE HARNESS. ENGINE RUN OPS CHECKED NORMAL, RAN ENGINE TO HIGH POWER IAW JRH APROXIMATELY 45 MINUTES WITH NO FAULTS.