As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 234 - EWR - RIGHT MAIN LANDING GEAR RED UNSAFE LIGHT ILLUMINATED, AFTER GEAR LOWERED DURING APPROACH FOR LANDING. CYCLED GEAR, RED AND GREEN LIGHT FLICKERED ALTERNATELY DURING SECOND APPROACH. FOUND RIGHT DOWNLOCK SENSOR AT FAULT, REPLACED SAME PER MX MAN 32-61-31. (M)