As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:N/A EMERGENCY DECLARED - LEFT MAIN GEAR LIGHTS DID NOT ILLUMINATE GREEN. REPLACED BULBS WITH KNOWN BULBS THAT WORKED BUT STILL COULD NOT GET GREEN LIGHTS TO ILLUMINATE. WITH THE FLAPS AT 35 DEG THE LANDING GEAR WARNING HORN DID NOT SOUND. T/S AND FOUND FAULTY DOWN SWITCH ASSY PER DC8 MM 32-60-00-1. REMOVED AND REPLACED FAULTY SWITCH. A/C READY FOR SERVICE.