As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CVG AIRBORN RETURN, RED LIGHT ON RT MAIN GEAR DOWN LOCK INDICATOR STAYED ON AFTER GEAR RETRACTION. GEAR EXTENDED NORMALLY. REPEAT WRITE-UP. REPLACED PROX SW ELECTRONICS UNIT AND RT MLG UP PROXIMITY SW PER M/M. OPN CKS NML GEAR CYCLED SEVERAL TIMES ALL INDICATION GOOD.