What was found
MSP - FLT 3318 - ON APPROACH, LT MAIN GEAR DOWN INDICATION LIGHT DID NOT ILLUMINATE AFTER GEAR EXTENSION. THE CREW CYCLED GEAR UNTIL A DOWN AND LOCKED INDICATION WAS RECEIVED. ALSO, THE ALTERNATE NOSE GEAR GREEN LIGHT WAS INOP. MAINTENANCE REPLACED LT UPLOCK ACTUATOR, PN 10800-113, WHICH HAD AN INTERNAL FAULT, AND THE LANDING GEAR EMERGENCY DOWNLOCK INDICATOR LIGHT SOCKET, PN 82410315-001, THAT HAD AN INTERNAL FAULT WITH THE SOCKET. SYSTEMS OPERATED SATISFACTORILY DURING A TEST FLIGHT. REFERENCE CONTROL NR MALA954267.