What was found
(CAN) DURING APPROACH GEAR SELECTED DOWN LT RED INDICATION FOR LT MAIN GEAR AND LT DOOR INDICATING AMBER. GO AROUND PERFORMED GEAR SELECTED UP AND THEN DOWN AGAIN ALL INDICATING GREEN, ACFT LANDED WITHOUT ISSUE. ACFT FERRIED BACK TO BASE TO INSPECT FURTHER AND PROBLEM WAS FOUND TO BE WITH LT UPLOCK ACTUATOR ASSY, PN 46500-9. AFTER TROUBLESHOOTING, THE LT MAIN GEAR UPLOCK ASSY WAS REPLACED, THEN THE OPS CHECK BECAME NORMAL. BA UPDATES: MLG HOOK ASSY FOUND WORN CAUSING INABILITY TO EXTEND GEAR USING PRIMARY SYS. HOOK ASSY SENT TO FOR EXAMINATION.