As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - ON FLIGHT 2438, RETURNED TO FIELD SEA-GEG, (MASTER WARNING) BAGGAGE DOOR LIGHT AND LOSS OF PRESSURIZATION AT 3000 FEET. INSPECTED AND FOUND LATCH HANDLE EXTENDED. OPENED DOOR AND INSPECTED. FOUND NO DEFECTS. RESET LATCH. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.