As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DESCENDING THRU 20,000 FT AND 340KTS INDICATED THE NOSE GEAR STARTED TO EXTEND FOLLOWED BY GEAR UNLOCK LIGHT THEN RETRACTED BACK UP. FOUND ALL 3 UPLOCK SWITCHES OUT OF RIG. COMPLIED WITH ADJUSTMENTS OF ALL 3 UPLOCK SWITCHES TO SPEC'S OPS CHECKS GOOD IAW MM 32-30-05.