What was found
BOS - FLT 4662 - ON DESCENT, WHEN CREW SELECTED GEAR DOWN, RIGHT GEAR DOWN AND LOCKED LIGHT WOULD NOT COME ON. CREW PERFORMED CHECKLIST AND EXECUTED A MISSED APPROACH INTO BOS. GEAR WAS CYCLED ONCE TO OBTAIN ALL DOWN AND LOCKED LIGHTS, AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE CLEANED AND LUBRICATED THE RIGHT MAIN GEAR UP AND DOWN LOCK MICROSWITCHES. ALL REQUIRED GEAR SWINGS AND CHECKES WERE PERFORMED AND THE AIRCRAFT WAS RETURNED TO SERVICE. (M)