As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT MAIN GEAR GREEN INDICATOR LIGHT ILLUMINATED INFLIGHT WITH MAIN GEAR RETRACTED PERFORMED ALTERNATE GEAR EXTENSION. REMOVED AND REPLACED ADVISORY CONTROL UNIT IAW AMM 31-51-06-000-801 AND 31-51-06-400-801. OPERATIONAL CHECK FLIGHT GOOD. RETURNED TO SERVICE.