As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER GEAR RETRACTION, GREEN GEAR LIGHTS OUT. THE RED LANDING GEAR UNSAFE LIGHT WAS ILLUMINATED ALONG WITH THE LEFT DOOR NOT LATCHED ON FLIGHT ENGINEER'S PANEL. COMPLIED WITH ALL ABNORMAL PROCEDURES AND LIGHTS REMAINED ILLUMINATED. REPLACED LEFT LANDING GEAR DOOR PROXIMITY SWITCH IAW DC-8 SUPPLEMENTAL MM 32-60-00. VISUAL INSPECTION WAS GOOD.