As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 4003 - UNABLE TO EXTINGUISH 'RED' INTRANSIT LIGHT AFTER TAKEOFF WHEN GEAR WAS RETRACTED. RETURNED TO FIELD WITHOUT INCIDENT. PIT MAINTENANCE INSPECTED AIRCRAFT AND DISCOVERED ICE AND SAND CONTAMINATION IN RT MLG UPLOCK ROLLER. CLEANED AND LUBRICATED ROLLER, CONDUCTED A TEST FLIGHT, EVERYTHING OPS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.