As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKE OFF FROM LAX, THE LANDING GEAR DOOR NOT LATCHED LIGHT ILLUMINATED FOLLOWING LANDING GEAR RETRACTION. THE FLIGHT CREW CYCLED THE GEAR BUT THE WARNING INDICATION REMAINED THE SAME. THE FLIGHT CONTINUED TO DEN FOR AN UNEVENTFUL LANDING. MAINTENANCE INSPECTED THE AIRCRAFT WHICH REVEALED DIRT BUILD UP ON THE SENSORS. MAINTENANCE CLEANED THE SENSORS AND PERFORMED SUCESSFUL OPERATIONAL CHECKS. THE AIRCRAFT WAS RETURNED TO SERVICE.