What was found
MISSED APPROACH AND DECLARED AN EMERGENCY DUE "LG LEVER DISAGREE" MSG AFTER SELECTING GEARDOWN. WITH A RED NOSE GEAR INDICATION. THE NOSE GEAR EXTENDED WITH A SAFE INDICATION AFTER PULLING THE FREE-FALL HANDLE. (ALL LANDING GEARS HAVE BEEN PINNED DUE TO EMERGENCY) AIRCRAFT RETURNED AND LANDED WITHOUT INCIDENT. REMOVED AND REPLACED NLG UPLOCK BOX ASSY. ALL OPS/FUNCTIONAL CHECKS GOOD NO DEFECTS NOTED AT THIS TIME. GOOD TO CONTINUE. (ALL LANDING GEAR PIN HAVE BEEN REMOVED PRIOR TO FLIGHT).