As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS MESSAGE DISPLAYED "R ENG FIRE LOOP 1". CHECKED RT ENG FIRE LP 1, NO DEFECTS NOTED. CHECK CONNECTIONS ON FIRE LOOP 1, NO DEFECTS NOTED IAW 26-11-00. COULD NOT DUPLICATE FAULT, OPS CHECK GOOD. ITEM REMAINS OPEN. REMOVED AND REPLACED UPPER ACT FIRE LOOP ASSY RT ENG PER AMM 26-11-02. REPAIRED WIRE TERMINAL ON RT ENG AFT LOWER LOOP IAW SRPM 20-30-22.