What was found
FLT 8220 - AFTER TAKEOFF UPON GEAR RETRACTION, GEAR LEVER UP NOSE GEAR UNSAFE LIGHT ON CONTINUOUSLY WITH LEFT MAIN AND RIGHT MAIN GEAR DOORS OPEN. RECYCLED GEAR DOWN. 3 GREEN LIGHTS ON. RETURNED TO HONOLULU. NOSE LANDING GEAR PROXIMITY SENSOR, P/N 8-642-02, MFG CRANE/ELDEC. PERFORMED PSEU BIT TEST IAW MM 32-61-50, PAGE 202, FOUND FAULT CODES TARGET 10 AND SENSOR 10. REPLACED NOSE GEAR DRAG STRUT PROXIMITY SENSOR AND ADJUSTED GAP IAW MM 32-20-11, PAGE 223, FIGURE 204. PERFORMED LANDING GEAR RETRACTION TEST IAW MM 32-30-00, PAGE 204 AND TEST FLIGHT. ALL PARAMETERS NORMAL.