As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT MAIN GEAR LIGHT DID NOT ILLUMINATE AFTER GEAR EXTENSION WITH NOSE AND RIGHT LIGHT. BULB CHECK OK, AND ILLUMINATED TWO MINUTES LATER. MAINTENANCE REPLACED THE LEFT GEAR DOWN LOCK SWITCH. GEAR SWINGS PERFORMED AND OPS CHECK OK. AIRCRAFT WAS RETURNED TO SERVICE.