As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RED GEAR UNSAFE LIGHT ILLUMINATED. LANDING GEAR AND DOOR LATCHING SELECTOR INDICATED RIGHT MAIN DOOR UNLATCHED. FOLLOWED ABNORMAL PROCEDURE AND ALL INDICATIONS RETURNED TO NORMAL. REPLACED THE GEAR PROXIMITY CONTROL BOX IAW DC-8 MM 32-10-00. OPS CHECKED GOOD.