As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH GEAR WAS SELECTED DOWN AND THERE WAS NO DOWN AND LOCKED INDICATION FOR RT MAIN GEAR. CREW DECLARED AN EMERGENCY AND BLEW THE GEAR DOWN AS A SAFETY PRECAUTION. LANDING WAS NORMAL BUT THERE NEVER WAS A GREEN INDICATION FOR THE RT GEAR. SUSPECT ICE AND SNOW BUILD UP PRIOR TO DEPARTURE CAUSED PROBLEM. GROUND TROUBLESHOOTING FOUND NO FAULT WITH INDICATING SYSTEM.