As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT T1716 - DURING APPROACH TO ORD WHEN LANDING GEAR EXTENDED, RT MLG RED LIGHT REMAINED ILLUMINATED. RECYCLED LANDING GEAR AND RED LIGHT EXTINGUISHED AFTER 2 MINUTES. AIRCRAFT LANDED ORD WITHOUT INCIDENT. REPLACED RT MLG DOWNLOCK SENSOR. ACCOMPLISHED LANDING GEAR RETRACTION CHECK WITH NO DEFECTS FOUND. SYSTEM GROUND CHECKED NORMAL OPERATION. (X)