As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN GEAR WAS EXTENED THE LT GEAR LIGHT DID NOT ILLUMINATE. AFTER CYCLING GEAR ALL THREE GEAR LIGHTS WERE NORMAL. MAINTENANCE REMOVED AND REPLACED LT MAIN LANDING GEAR DOWN LOCK INDICATION SWITCH. OPERATIONAL CHECK GOOD. AIRCRAFT WAS RETURNED TO SERVICE.