As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT LOWERED LANDING GEAR. LEFT MLG DOWN INDICATOR LIGHT (GREEN) FAILED TO ILLUMINATE AND LANDING GEAR WARNING HORN ALERTED PILOT OF POSSIBLE UNSAFE LEFT MLG CONDITION. PILOT RE-CYCLED LANDING GEAR INCIDENT. FURTHER INVESTIGATION INDICATED LEFT MLG MICROSWITCH, SPRING-LOADED PLUNGER STUCK BEFORE REACHING ITS FULLY EXTENDED POSITION. REMEDY, CLEAN AND LUBE SPRING-LOADED PLUNGER.