What was found
AFTER AIRBONE, RAISE GEAR HANDLE UP, NOSE GEAR RED LIGHT ILLUMINATE. A/C AIR TURN BACK, A/C LANDING. PERFORMED TROUBLESHOOTING, FOUND NOSE GEAR PROXIMITY SENSOR FUNCTION NO GOOD IAW AMM 32-60-02. REPLACED NOSE LANDING GEAR DOWN AND LOCKED PROXIMITY SENSOR AND ADJ. GAP TO 0..75IN , OPERATIONAL CHECK CONDITION BACK TO NORMAL.