As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT REPORTED AFTER SELECTING GEAR DOWN AND INDICATING LOCKED WITH THREE GREEN LIGHTS, LH MAIN GEAR UNSAFE LIGHT CAME ON AND WARNING HORN SOUNDED. AIRCRAFT LANDED OK. BOTH UPLOCK AND DOWNLOCK SWITCHES REPLACED, SUSPECTED MOISTURE.