As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STATUS MSG L ENGINE FIRE LP1 ON IN CRUISE, EXTINGUISHED UPON DESCENT. S/D - CONTINUALLY CHECKED ALL DETECTORS. MESSAGE IS NOT PRESENT ON EICAS. SWAPPED LOOP 1 AND LOOP 2 FIRE DETECTION CARD FILE. LOOP 1 S/N 18837 P/N 6445-01. LOOP 2 S/N 18869 P/N 6445-01. FIRE DETECTION CARD FILE IAW MM 26-10-01-4. OPS NORMAL. (M)