As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YEG - ON FLIGHT 2315 THE AFT BAGGAGE DOOR CAUTION ILLUMINATED. PRESSURIZATION LOST AT 6,000 FEET. AIRCRAFT RETURNED TO FIELD AND ACCOMPLISHED AN UNEVENTFUL LANDING. MAINTENANCE FOUND THE HANDLE NOT STOWED. INSPECTED DOOR AND OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.