As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH TO LANDING AT LOUISVILLE LEFT MAIN GEAR WOULD NOT INDICATE DOWN AND LOCKED. REPEATED CYCLES DID NOT HELP. AIRCRAFT RETURNED TO HOME BASE AND LANDING GEAR EXTENDED NORMALLY. AIRCRAFT WAS PLACED ON JACKS, GEAR FUNCTIONED NORMALLY. LEFT MAIN SWITCH WAS REPLACED. AIRCRAFT WAS RETURNED TO SERVICE. RECOMMEND REPLACING GEAR SWITCHES WHEN IRREGULAR INDICATION IS NOTED. (X)