As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE RT MLG GREEN LIGHT FLICKERED WHEN GEAR WAS EXTENDED ON APPROACH TO EWR. THE EMERGENCY GEAR HANDLE WAS PULLED AND THE GREEN LIGHT ILLUMINATED STEADILY FOR A NORMAL LANDING. THE GROUND PROXIMITY SENSOR WAS CLEANED. A PROXIMITY SENSOR TEST AND EVALUATION FLIGHT WERE CONDUCTED WITH OPERATION AND INDICATIONS CHECKING GOOD.