As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 9535 - PHL-FSD-SEA - ON APPROACH TO FSD, AFTER EXTENDING THE LANDING GEAR THE 'LANDING GEAR DOOR' LIGHT STAYED ON. THE FLIGHT CREW CYCLED THE LANDING GEAR THREE TIMES BEFORE THE GEAR DOOR LIGHT WENT OUT. THE LANDING GEAR DOORS AND THE LANDING GEAR WERE INSPECTED NO DEFECTS NOTED. LUBRICATED LANDING GEAR HINGE POINTS WHERE MOISTURE WAS PRESENT. AIRCRAFT RETURNED TO SERVICE. (M)