As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN GEAR WAS RETRACTED AFTER TAKE-OFF, LANDING GEAR UNSAFE LIGHT REMAINED ON. RT MLG DOOR INDICATED NOT LATCHED. CYCLED GEAR PER ILN MAINTENANCE REQUEST. NO CHANGE IN PROBLEM. REPLACED RT MLG DOOR ACTUATOR IAW DC-8 MM 32-31-05. ADJUSTED FOLLOW-UP HITCH IAW DC-8 MM 32-31-05. OPS CHECKED GOOD.