As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING UPLATCH CHECK, DOOR NOT LATCH LIGHT CAME ON. THE CREW CYCLED MAIN GEARS TWICE AND DOOR NOT LATCH LIGHT REMAINED ON. THE CREW LANDED WITHOUT FURTHER INCIDENT. MX INSPECTED MAIN GEAR DOORS AND FOUND THE LT GEAR DOOR SWITCH CONNECTOR LOOSE AND DIRTY. MX CLEANED AND RESECURED CONECTOR. OPS CHECKED GOOD IAW MM 32-60-0. ACFT RETURNED TO SERVICE.