As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FINAL APPROACH, WHEN GEAR SELECTED DOWN "GEAR DISAGREE" MESSAGE RECEIVED SHOWING NOSE GEAR NOT DOWN AND LOCKED. QRH FOLLOWED EMERGENCY DECLARED WITH UNEVENTFUL LANDING. MX TROUBLESHOT SYS FOUND THE NOSE LANDING GEAR PRIORITY VALVE FAILED. VALVE REMOVED AND REPLACED IAW AMM AND GEAR SWINGS PERFORMED WITH NO DEFECTS NOTED. (K)