What was found
ON APPROACH GEAR HANDLE ILLUMINATED WITH GEAR SELECTION UP POSITION. INDICATION LASTED UP TO 4 SECONDS THEN EXTINGUISHED. NORMAL GEAR EXTENSION PERFORMED ALL OTHER INDICATIONS NORMAL. REPLACED LMLG UPLOCK PROX SWITCH AS A PRECAUTIONARY MEASURE PER 32-61-06-000-802 AND 32-61-06-400-802. OPS CHECK GOOD NO DEFECTS NOTED . NO FAULTS FOUND IN PSEU. PERFORMED OPS CHECK OF THE ALTERNATE EXTENSION SYSTEM PER TASK 32-34-00-710-802 OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.