As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DESCENDING OUT OF 3500 FT, THE FUSELAGE DOOR MASTER WARNING LIGHT KEPT GOING FROM ON TO OFF. THE DOORS PAGE INDICATED THE AFT PAX DOOR. MAINTENANCE INSPECTED THE AIRCRAFT AND CLEANED AND LUBED THE SPRING PORTION OF THE PROX SENSOR. THE SPRINGS ON EXTERNAL DOOR HANDLE MECHANISM WERE FOUND TO HAVE NO TENSION. THE SPRINGS WERE REPLACED, OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RETURNED TO SERVICE.