As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GOT INTERMITTENT CABIN SMOKE LEVEL 3 ALERT WITH TRITONE ALERT WAS ON 2 TIMES FOR ABOUT 2 SECONDS. LANDED UNEVENTFULLY & FIRE DEPT SAID NO INDICATION OF FIRE OR HEAT. FOUND NR 9 SMOKE DETECTOR FAILED. R & R NR 9 SMOKE DETECTOR & TESTED GOOD IAW AMM 26-15-01-4. ACFT OK FOR SERVICE.