As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH, GEAR WAS SELECTED DOWN, RESULTING IN NO LEFT GREEN MAIN UNLOCK LIGHT FOLLOWED BY RED GEAR UNLOCK LIGHT. QUICK DECISION WAS MADE TO CYCLE THE GEAR HANDLE RESULTING IN 3 GREEN GEAR DOWN & LOCKED ANNUNCIATOR LIGHTS. LANDING WAS UNEVENTFUL. ACFT WAS FERRIED WITH GEAR EXTENDED TO MFG SERVICE CTR TO PERFORM GEAR EXTENSION & RETRACTION. TROUBLE SHOT THE DISCREPANCY TO A FAULTY LT GEAR ACTUATOR DOWN LOCK SWITCH. THE LT MLG ACTUATOR WAS REPLACED, GEAR SWINGS PERFORMED WITH NO DEFECTS NOTED. ACFT WAS RETURNED TO SERVICE.