As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE WHEEL UNSAFE INDICATION AFTER TAKEOFF. FOLLOWED APPROPRIATE CHECKLIST STILL HAD UNSAFE INDICATION. NLG IND VISUAL INSPECTION CONFIRMED GEAR DOWN. RETURNED FOR LANDING. FOUND PROX SENSOR D1-32 INOP. REPLACED AND SWUNG GEAR. CHECKS OK PER M/M.