What was found
CAPTAIN REPORTED THAT 3 RED LANDING GEARS LIGHTS TURNED ON DURING CLIMB AND CRUISE. PROXIMITY SWITCH COMPUTER WAS TESTED, CIRCUIT BREAKER WAS RESEATED, LANDING UP SENSORS AND CONNECTORS WERE CHECKED, ALL CORRECT. DURING TRANSIT CHECK AT GDL, THE PROXIMITY SWITCH COMPUTER WAS REPLACED IAW MM 32-60-04, TESTED CORRECT. DURING OVERNIGHT CHECK, THE FAILURE CONTINUED, THEREFORE THE RT THROTTLE SWITCH UNIT WAS REPLACED IAW MM 76-10-03 AND LANDING GEAR TEST WAS PERFORMED IAW MM 32-60-00, ALL CORRECT.