As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEFECT DESCRIPTION: (ACFT LANDED INTO SDF NOT CODED FOR TRAX) DESCENDING INTO CVG AT ABOUT FL 210 NR 4 MASTER FIRE T-HANDLE MASTER FIRE LIGHT ILLUMINATED. EMERGENCY PROC COMPLETED PER AOM. DURING FIRE EMERGENCY PROC, UNABLE TO FIRE SECOND BOTTLE. INSPECTED NR 4 ENG FIRE DETECTION LOOPS & PNEU DUCTS, NO DEFECTS NOTED. REMOVED AND REPLACED BOTH RT WING FIRE BOTTLES. REMOVED AND REPLACED NR 4 FIRE DETECTOR CNTR UNIT, RAN NR 4 ENG SYS OPS CHECKED NORMAL ON GROUND IAW DC-8 M/M 26-10-2, 26-20-1 AND JRH 13.1ON.