As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX FLIGHT NR 2309: INTERMITTENT FWD BAGGAGE SMOKE DETECTOR WARNING WITH NO EVIDENCE OF SMOKE OF FIRE IN FWD BAGGAGE COMPARTMENT. MAINTENANCE REMOVED AND REPLACED THE SMOKE DETECTOR LOCATED IN THE FWD BAGGAGE COMPARTMENT IAW Q400 AMM TASK 26-12-06-000-801 AND 26-12-06-400-801. PERFORMED OPS TEST OF THE FWD BAGGAGE COMPARTMENT SMOKE DETECTOR IAW TASK 12-12-06-710-801. NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.