What was found
ON APPROACH, THE RT MAIN GEAR INDICATOR LIGHT WOULD NOT ILLUMINATE. CREW FOLLOWED AFM CHECKLIST PROCEDURE. THE LANDING GEAR EMERGENCY BLOW DOWN BOTTLE WAS USED. AC DIVERTED, LANDING WAS UNEVENTFUL, EMERGENCY VEHICLES WERE STANDING BY. MAINT TROUBLESHOT THE DISCREPANCY TO A LOOSE RT LANDING GEAR INDICATOR SWITCH. THE SWITCH WAS RESEATED AND THE BULBS WERE REPLACED. MAINT RESET, PURGED, AND SERVICED THE EMERGENCY GEAR AND BRAKE SYSTEM. SEVERAL GEAR SWINGS WERE PERFORMED. SYSTEM OPERATION CHECKED GOOD.