As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRE SYS FAULT STATUS MESSAGE. PLACED ON MEL 26-00-1. MDC FAULT HISTORY INDICATES LT ENG FIRE LOOP B, SHORTED, FAULT IS NOT CURRENT. REMOVED LT ENG LOWER FIRE DETECTION RAIL IAW MM 26-11-03-000-801 AND INSTALLED NEW SERVICEABLE LOOP A239. REINSTALLED RAIL IAW 26-11-03-400-801. OPS CK GOOD, CLEAR MEL. RETURNED TO SERVICE.