What was found
SELECTED GEAR DOWN, THE RT MLG DID NOT SHOW DOWN & LOCKED WITH A RED INDICATION PRESENT. ON FINAL, CYCLED MLG 1 MORE TIME & INDICATION THE SAME. FLY BY TOWER & TOLD THAT THE MLG LOOKED TO BE NORMAL. ON DOWNWIND LEG AT 1500 FT AGL RED LIGHT WENT OUT & GREEN LIGHT OF SAFE GEAR CAME ON. LANDED. REMOVED RT MLG ACTUATOR PN 27300-000-04, SN IL-069 AND INSTALLED REPAIRED UNIT PN 27300-000-04, SN IL-141. BLED ACTUATOR & PERFORMED GEAR SWINGS, NO DEFECTS NOTED WITH LANDING OPERATION. CLOSED ALL ACCESS AND VERIFIED FALL CONNECTORS DISTURBED DURING TROUBLESHOOTING TO BE SECURE. ALL WORK ACCOMPLISHED IAW G200 AMM.