As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE 'ENG 1 FIRE LP B' EICAS STATUS MSG DISPLAYED. ENG 1 FIRE LOOP-B FIRE OR FAULT OUTPUT. FOUND LOOSE CONNECTION ON FWD LOOP. CLEANED AND SECURED LOOP CONNECTION. CLEANED AND SECURED THE OTHER B LOOP CONNECTIONS. OPS TEST NORMAL. AC OK FOR SERVICE.