As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISCREPANCY: MI DUE TO NR 1ENGINE FIRE/OVERHEAT EICAS MESSAGE. FIRE LOOP 2 STATUS MESSAGE ALSO ILLUMINATED. RESET SIX TIMES IN FLIGHT. AIRCRAFT RETURNED TO STATION. CORRECTIVE ACTION: PERFORMED FIM 26-11 FT 804 BLOCKS 1, 2, & 3. FOUND TERMINAL BROKEN AT LWR AFT LOOP 1. REPLACED TERMINAL PER SWPM 20-30-00 OPS CHECK GOOD.