As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - FLT 4374 - WHEN GEAR WAS SELECTED DOWN THE RIGHT MAIN GREEN LIGHT FAILED TO ILLUMINATE. CREW USED EMERGENCY PROCEDURES TO EXTEND GEAR. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND BROKEN GROUND WIRE IN INDICATION SYSTEM. WIRE WAS REPAIRED AND SYSTEM TESTED GOOD. AIRCRAFT WAS RETURNED TO SERVICE. (M)