As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:N/A, ON TOP OF DESCENT MAIN CARGO SMOKE LIGHT ILLUMINATED, LIGHT REMAINED ON AT ALL SEVEN POSITIONS. CARGO SMOKE LIGHT REMAINED ON FOR 30 MINUTES, UNTIL PARKING WHEN LIGHT WENT OUT. DID NOT SEE OR SMELL ANY SMOKE OR FUMES. REMOVED AND REPALCED #4 SMOKE DETECTOR ASSY ALSO RELAMPED ALL OTHER DETECTORS WITH CORRECT LAMPS. SYS OPS CK NORMAL IAW MM DC8 26-10-05. S/N ON: 32007, S/N OFF: 34371.