As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF REAR BAG DOOR WARNING LIGHT CAME ON. RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. FOUND REAR CARGO DOOR HANDLE NOT LATCHED. CLEANED AND LUBED HANDLE AND LATCH. NO PARTS REPLACED. OPERATIONAL CHECKS GOOD. AIRCRAFT REUTNED TO SERVICE.