As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DESCENT BELL SOUNDED MAIN FIRE LIGHT ILLUMINATED, SMOKE ILLUMINATED. EMERGENCY DECLARED. FUMES WERE PRESENT IN THE COCKPIT. ALL EMERGENCY QRH CHECKLIST ACCOMPLISHED. WHILE ENTERING A/C NOTICED NO ODOR OF ANY SORT, INSPECTED A/C FOR ANY SIGNS OF HEAT STRESS OR FIRE NONE FOUND, SUSPECT BAD SMOKE DETECTOR. REMOVED AND REPLACED NR 6 SMOKE DETECTOR OPS CHECKS NORMAL AS PER 727 M/M 26-16-001-4. A/C OK TO CONTINUE.