As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER GEAR EXTENSION, NOSE GEAR GREEN LIGHT DID NOT COME ON. NO RED UNSAFE LIGHT ON. REPLACED BULBS, NO HELP. CREW PERFORMED A GO-AROUND, CYCLED GEAR. VISUALLY CHECKED NOSE GEAR DOWN AND LOCKED, MADE NORMAL LANDING. GEAR PINNED AFTER LANDING AND AIRCRAFT TAXIED TO GATE. NOSE GEAR GREEN LIGHT CAME ON AFTER BLOCK IN AT GATE. FOUND NOSE GEAR DOWNLOCK SWITCH AND CONNECTOR CORRODED AND CAUSING INDICATION PROBLEMS. REPLACED CONNECTOR IAW DC-8 MM 20-50-01-2. REPLACED SWITCH IAW DC8 MM 32-60-00. OPS CHECKED GOOD.