What was found
CLL- AFTER TAKEOFF,THE RIGHT MAIN GEAR WOULD NOT RETRACT. THE GREEN SYSTEM PRESSURE GAUGE FLUCTUATED ALONG WITH THE GEAR UNSAFE INDICATIONAS WELL AS A LOUD BANGING/RATTLING FROM THE RIGHT SIDE OF AIRCRAFT. FLIGHT CONTINUED AT 160 KIAS WITH DOWN and THREE (3) GREEN INDICATION. THE AIRCRAFT LANDED AT IAH WITHOUT INCIDENT. IAH- MAINTENANCE REMOVED AND REPLACED THE RIGHT MLG UPLOCK PROX SWITCH, PERFORMED A OPERATIONAL CHECK OF THE LANDING GEAR,NO DEFECTS NOTED, AND, THE AIRCRAFT WAS APROVED FOR RETURN TO SERVICE.