As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH, CREW SELECTED GEAR DOWN AND RECEIVED BOTH MAIN DOOR RED INDICATIONS AND NO GREEN DOWN AND LOCK INDICATIONS. RETURNED TO DEPARTURE AND SELECTED GEAR DOWN WITH EMERGENCY HYD EXTENSION AND RECEIVED THREE GREEN DOWN AND LOCKED LIGHTS. ACFT LANDED UNEVENTFULLY, MAINTENANCE REPLACED BOTH MAIN GEAR DOOR ACTUATOR PROXIMITY SWITCHES ALONG WITH THE CONNECTORS AFTER TROUBLESHOOTING.