As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 1443, AMS-PHL: DURING CRUISE, CREW RECEIVED A LANDING GEAR MONITOR MESSAGE AND A LEFT GEAR DOWN AND LOCKED GREEN LIGHT WITH ALL GEAR UP AND LOCKED. ALL OTHER INDICATIONS NORMAL. FLIGHT CONTINUED TO PHL WITH NO DIFFICULTIES. CONDUCTED A TOWER FLY BY AT PHL TO ENSURE GEAR WAS DOWN. FLIGHT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE S258 SIDE BRACE DOWN SENSOR.