As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE LANDING GEAR DOWN SAFE LIGHT DID NOT ILLUMINATE WITH GEAR HANDLE DOWN AND NOSE GEAR UNSAFE LIGHT REMAINED ILLUMINATED. RECYCLED HANDLE, SAME INDICATION. DURING ABNORMAL CHECKLIST, NORMAL GEAR DOWN INDICATION OCCURED. REPLACED THE NOSE LANDING GEAR DOWN LOCK POSITION AND WARNING SWITCH IAW DC-9 MM 32-60-00-0-0101. OPS CHECKED GOOD.