What was found
IAH - FLT 1703 - THE RT MLG GREEN LIGHT WOULD NOT ILLUMINATE WHEN GEAR WAS EXTENDED ON APPROACH TO IAH. A TOWER FLYBY VERIFIED THE RT GEAR WAS NOT EXTENDED. A MANUAL GEAR EXTENSION WAS PERFORMED WITH 3 GREEN LIGHTS INDICATED AND A SECOND TOWER FLYBY CONFIRMED GEAR WAS DOWN AND LOCKED. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE RT MLG UPLOCK ACTUATOR AT FAULT. THE ACTUATOR WAS REMOVED AND REPLACED IAW MM 32-32-41. THE GEAR WAS SWUNG WITH OPERATION AND INDICATIONS CHECKING GOOD. (X)