As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 3336 - ON APPROACH TO CMX, THE RIGHT GEAR DIDN'T INDICATE DOWN AND LOCKED AFTER GEAR EXTENSION. THE CREW CYCLED THE GEAR UNTIL A DOWN AND LOCKED INDICATION WAS RECEIVED. MAINTENANCE REPLACED THE RIGHT MAIN LANDING GEAR UPLOCK ROLLER. SYSTEM OPERATED SATISFACTORILY. (Z)