As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE GEAR DOOR LIGHT STAYED ON AFTER TAKEOFF. DUMPED 17, 500 LBS OF FUEL AND RETURNED TO ORD. FOUND INTERMITTENT NOSE GEAR DOOR WARNING SWITCH. REMOVED AND REPLACED NOSE GEAR DOOR WARNING SWITCHES. GEAR DOOR WARNING SYSTEM OPS CHECK GOOD IAW 727 MM 32-62-11.