As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE GEAR DOOR INDICATED UNSAFE UPON EXTENSION FOR APPROACH AND LANDING. SPEED WAS 180KIAS. ALTITUDE WAS 4000MSL. STATUS/FLAPS WERE 15/15. COMPLIED WITH ECAM AND QRH. ON FINAL THE SECOND TIME, SELECTED FLAPS 20 AND SLOWED TO 160. PASSING 3000 FT THE GEAR DOOR CLOSED. INITIAL INDICATIONS WERE ON BOTH PANELS. FIRE RESCUE INSPECTED AND SAID EVERYTHING LOOKED NORMAL. EMERGENCY DECLARED, REMOVED AND REPLACED NLG UPLOCK. UPLOCK FUNCTIONS NORMALLY WITH NO LEAKS NOTED.