As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE FIRE WARNING OVERHEAD PANEL ONLY. INSPECTED ENGINE PER AMM 2C-O0-00, FOUND ENGINE FAN FIRE LOOPS A/B CHAFED APPROXIMATELY ONE-HALF DIAMETER. REMOVED AND REPLACED NR 1 ENGINE FAN FIRE LOOP ASSY PER AMM 26-12-15. FOUND ALL GROUND TESTS SATISFACTORY WITH NO FAULTS.