What was found
AFTER TAKEOFF, RECEIVED A GEAR DISAGREE AND NOSE DOOR WARNING, AFTER SELECTING THE GEAR UP. COMPLIED WITH QRH, PULLED THE EMERGENCY GEAR EXTENSION HANDLE, GEAR INDICATED DOWN, 3-GREEN AND MESSAGES CLEARED. LANDING WAS NORMAL. INSPECTED AND FOUND NLG CENTER PROXIMITY SWITCH BRACKET CRUSHED AND HARNESS DAMAGED,