As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW RETURNED TO THE FIELD DUE TO MLG NOT RETRACTING WHEN SELECTED UP. AHM IS FAULTING THE LT GEAR EXTEND PROX SENSOR 21GA. REPLACED 21GA SENSOR DUE TO CORROSION. REPLACED LT MLG MAIN GEAR HARNESS CONNECTOR INSIDE J BOX. REPLACED LT 1M HARNESS, LT 2M ENHANCED HARNESS. GEAR SWING WITH NO DEFECTS NOTED