As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERMITTENT GEAR DOOR OPEN LIGHT ON FINAL APPROACH. AFTER GO AROUND ALL INDICATIONS NORMAL. LIGHT CAME ON APPROX 1000 FT AGL, HYD PUMPS WERE ON & HIGH WITH 3000 PSI. ALL GEAR INDICATORS WERE GREEN. FOUND LT MLG DOOR OPEN PROX SENSOR AT FAULT. R & R LT MLG DOOR OPEN PROX SENSOR. OPERATIONS CHECKED GOOD IAW MM 32-60-05-2-0.