As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, CREW HEARD A THUMP & RECEIVED BAGGAGE DOOR OPEN MSG, NO NOTICEABLE PRESSURIZATION ISSUE NOTED. CHECKLIST FOLLOWED & UNSCHEDULED LANDING PERFORMED WITHOUT INCIDENT. EVALUATION FOUND THE BAGGAGE DOOR FWD LATCH PIN ROLLER BROKEN, ALLOWING DOOR TO SHIFT. THE DOOR SHIFTING ALSO DAMAGED THE ROLLER CAP & SCREW, LEAVING ONLY THE PIN HOLDING THE LATCH IN PLACE. LATCH PIN PN 4AS3330121-001 & ROLLER PN 4AS3330112-001.