As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH INTO DAL WE SELECTED GEAR DOWN AND THE NOSE WHEEL DID NOT COME DOWN. WE THEN RECEIVED A WARNING CAS MESSAGE OF LG LEVER DISAG. RAN QRH AND AFTER WE CYCLED THE LANDING GEAR, THE NOSE WHEEL CAME DOWN. CORRECTIVE ACTION: REMOVED LANDING GEAR CONTROL LEVER P/N:827101-13 S/N:1209 AND INSTALLED LANDING GEAR CONTROL LEVER P/N:827101-13 S/N:1207. ALL OPS CHECKS GOOD IN REF TO EMB-505 AMM 32-31-01