As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITHIN 60 SECONDS AFTER GEAR EXTENSION, WHILE FLAPS WERE TRACKING TO 15, AND THREE GREEN LIGHTS ILLUMINATED, THE NOSE GEAR UNSAFE AND AMBER LIGHT ILLUMINATED ALONG WITH SOUNDS OF MECHANICAL ACTUATION IMMINATING FROM THE NOSE GEAR OR NOSE GEAR DOORS. PRECAUTION, THE CREW DECLARED AN EMERGENCY AND PERFORMED AN ALTERNATE GEAR EXTENSION VIA THE QRH. R & R PROXIMITY SENSOR ON NOSE GEAR.