What was found
(CAN) CREW REPORTED LANDING GEAR INDICATION CIRCUIT BREAKER POPPED. LOST THREE (3) GREEN INDICATION. CREW FOLLOWED CHECKLIST, RESET CB, 3 GREEN INDICATION WAS EVIDENT AND ACFT LANDED WITHOUT INCIDENT. ACFT WAS INSPECTED BY MAINTENANCE AND IT WAS DISCOVERED THAT THE LT UPLOCK SWITCH, S106 WAS FOUND AT FAULT. CONTACTS 1 & 2 REMAINED CLOSED WHEN SWITCH ACTIVATED WHEN GEAR SELECTED UP. NEW SWITCH WAS INSTALLED IAW MM32-60-00. GEAR SWINGS CARRIED OUT AND CHECKED SERVICEABLE. ACFT WAS RETURNED TO SERVICE. REF IPC 32-60-00-03, ITEM 28.