What was found
RECEIVED A GEAR UP DISAGREE AND NOSE DOOR WARNING AFTER TAKE OFF. COMPLIED WITH QRH, NOSE WHEEL DID NOT RETRACT, MLG UP AND LOCKED, NOSE SHOWING DOWN AND LOCKED. REMOVED AND REPLACED NOSE LANDING GEAR BRACKET SUB ASSY, RIGHT PROXIMITY SENSORS, WOW NR 2 AND OLEO CENTERED & EXTENDED HARNESS IAW AMM 32-61-05, AND 32-24-01. OPS CHECKED GOOD AND RIG CHECKED GOOD.