As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT, FIRE LOOP DETECTION LIGHT CAME ON. LOOP-B ILLUMINATED, SELECTED LOOP-A AND GOT AN INVALID TEST. SELECTED LOOP-B RIGHT ENGINE AND GOT A FIRE WARNING INDICATION. SHUT DOWN RIGHT ENGINE AND FIRED BOTH FIRE BOTTLES. CLEANED OIL FROM B-LOOP CONNECTORS AND REPAIREDTHE CHAFED WIRING ON A-LOOP, FIRE WARNING OPS CHECKED GOOD IAW DC-9 MM.