As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH UPON GEAR EXTENSION, THE GEAR DOOR OPEN LIGHT WOULD NOT EXTINGUISH. WHEN GEAR WAS RECYCLED, THE DOOR LIGHT WENT OUT AFTER A PERIOD OF TIME. CHECKED THE MAIN LANDING GEAR CONTROL VALVE AND ADJUSTED THE RIGHT HAND DOOR VALVE CRANK IAW DC-9 MM 32-32. OPS CHECKED HYDRAULIC CONTROL SYSTEM IAW DC-9 MM 32-32. OPS CHECKED GOOD.