As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE FIRE HANDLE DOES NOT ILLUMINATE DURING FIRE TEST. FAULT LIGHT ILLUMINATED. ACFT GROUNDED. CONFIRMED FAULT, FOUND THE A LOOP TERMINAL LUG ON RIGHT CORE LOOP BROKEN. REPLACED TERMINAL LUG IAW AMM 26-11-02. NR 1 ENGINE FIRE LOOP OPS TESTED NORMAL.