As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CARGO DOOR LIGHT OPEN CAS CAME ON IN FLIGHT. SCHEMATIC SHOWED IT AS LT FRONT BAGGAGE DOOR. CLEANED AND LUBRICATED THE LH NOSE DOOR LATCH DUE TO OPEN CAS MESSAGE. PERFORMED FUNCTIONAL CHECK, OPS CHECK IS GOOD. THERE WERE NO CAS MESSAGE SHOWN, THEREFORE THE ISSUE CANNOT BE DUPLICATED. ALL WORK IS DONE IAW AMM 52-32-25. NO OTHER DEFECTS NOTED.