As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX FLIGHT NR 2121 MASTER CAUTION - SMOKE WENT OFF NUMBEROUS TIMES DURING CLIMB (AFTER 10000') CRUISE (16000') AND APPROACH. MAINTENANCE INSPECTED BAGGAGE COMPARTMENT SMOKE DETECTORS. FOUND NO COPPER SHIELDING TAPE INSTALLED ON EITHER SMOKE DETECTOR. INSTALLED SHIELDING TAPE. SYSTEM OPERATION CHECK GOOD. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.