As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE FIRE NR 3 SHUT DOWN ENG, NO FIRE INDICATION ON N1, N2 OR EGT. ALERT OCCURRED ON CLIMB OUT PASSING FL 220. CHECKED FDCU NR 3 & FOUND CURRENT FAULT LOWER TURBINE LOOP A & FIRE LOOP A. PERFORMED TROUBLESHOOTING & FOUND LOWER TURBINE LOOP A DH5 BROKEN. REPLACED SAME PARTS, NO CURRENT FAULT & RTS TEST PASSED.