As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING A FLIGHT THE CREW NOTICED THAT THE CARGO DOOR LIGHT WAS ILLUMINATED. DECISION WAS MADE TO DIVERT TO THE MAINTENANCE BASE TO ASSESS SITUATION. THE ACFT LANDED WITHOUT INCIDENT. UPON INSPECTION MAINTENANCE DISCOVERED THAT THE CARGO DOOR UPPER FORWARD LATCH SWITCH WAS OUT OF ADJUSTMENT. THE SWITCH WAS ADJUSTED, FUNCTION CHECKED AND THE ACFT WAS RETURNED TO SERVICE, REF IPC 32-70-00-09, VIEW F.