As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT MAIN GEAR LIGHT WOULD NOT ILLUMINATE. PERFORMED LAMPS TEST, LAMPS TESTED OK. RECYCLED C/B F7, LIGHT CAME ON. ON APPROACH LIGHT WENT OUT AGAIN. RECYCLED F7 AGAIN LIGHT CAME BACK ON. MAINTENANCE TROUBLESHOT LT MLG DOWNLOCK INDICATOR SWITCH AND RELAY. CLEANED SWITCH AND REPLACED RELAY 9GA. OPS CHECK GOOD.