As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT - FLT 799 - ON GEAR EXTENSION, CREW RECEIVED RED GEAR DOOR LIGHT. CREW RECYCLED THE GEAR TWICE WITH SAME INDICATION. GEAR WAS MANUALLY EXTENDED AND TOWER FLYBY CONDUCTED. FLIGHT LANDED WITH NO FURTHER INCIDENT. MAINTENANCE FOUND THE DOOR UP STOP LOOSE AND ADJUSTED IT. THE GEAR DOWN SEQUENCE VALVE WAS REPLACED AS A PRECAUTION. (M)