What was found
RIGHT MAIN LANDING GEAR GREEN DOWN AND LOCKED LIGHT DID NOT ILLUMINATE AFTER GEAR HANDLE SELECTED DOWN. RECYCLED GEAR, NO HELP. RED LIGHT OUT, NO HORN AT 35 DEGREE FLAPS. GREEN LIGHT ILLUMINATED JUST PRIOR TO LANDING. REPLACED RIGHT MLG DOWN LOCK SWITCH IAW DC-8 MM 32-60-00, OPS CHECKED GOOD.